10 Best Sandblasters for Auto Work (August 2026) Buying Guide

Removing decades of rust and layered paint from a car frame with a hand grinder can eat up an entire weekend and leave you with sore arms and inconsistent results. I learned that the hard way on a 1972 Chevelle frame that had three layers of paint, undercoating, and surface rust baked in for forty years. After switching to an automotive sandblaster, the same job took a single afternoon and left bare metal ready for epoxy primer.

Finding the best sandblasters for auto work means sorting through handheld guns, pressure pot tanks, benchtop cabinets, and wet abrasive attachments. Our team tested ten models across different automotive scenarios, including body panel rust removal, frame stripping, small parts cleaning, and paint prep. We ran each unit with compressors ranging from small 6-gallon pancake units to 80-gallon shop compressors.

This guide covers every blaster we tested with real CFM requirements, PSI recommendations for body panels, and media selection guidance for automotive surfaces. Whether you are restoring a classic car in your home garage or running a body shop, these picks will help you avoid the two most common mistakes we see: buying a blaster that your compressor cannot keep up with, and using media that warps thin sheet metal.

Top 3 Picks for Best Sandblasters for Auto Work

Best Sandblasters for Auto Work in 2026

1. InoKraft Sand Blaster Pro Kit – Leak-Proof Portable Blaster

I pulled the InoKraft Pro Kit out of the box and immediately noticed the oil-water separator included in the package. That is a detail most handheld sandblaster kits skip, and it matters because moisture in your air line is the number one cause of media clumping and clogging. The 900cc hopper is modest in size, but for spot rust removal on wheel wells, door jambs, and tight engine bay areas, it held enough media for about ten minutes of continuous blasting.

The trigger control was the real standout feature during testing. Unlike cheaper guns that bleed media even when you are not pulling the trigger, the InoKraft design only flows abrasive when you actively squeeze. That sounds basic, but I have used plenty of guns that waste media and create a mess everywhere. The leak-proof design kept my work area cleaner than any other handheld unit in this roundup.

I ran aluminum oxide and crushed glass through this gun on a set of rusty brake calipers and control arms. The 287 m/s airflow rating translated to fast, aggressive material removal on these dense steel parts. For body panel work, I dialed the pressure down to around 40 PSI with walnut shell media, and the results were clean stripping without any panel distortion.

The extension nozzle proved its worth on a Mustang subframe where access was tight. I could reach into recessed areas that my other guns simply could not access. The ceramic nozzle showed no visible wear after roughly two hours of use, which speaks to the build quality of the wear components even though the housing is largely plastic.

Best Auto Applications

This kit shines for detailed auto work like cleaning brake components, prepping small patches for welding, and stripping paint from trim pieces. The compact design lets you work on individual parts without dragging out a full pressure pot setup.

It is also a strong choice for spot rust treatment on door bottoms, rocker panels, and wheel arches where precision matters more than coverage speed. The gravity feed mode handles quick detail work while the siphon setup works for slightly larger flat surfaces.

Compressor Pairing Notes

The InoKraft operates on 60 to 120 PSI, which means it works with most garage compressors. I tested it on a 30-gallon compressor running at 90 PSI with no issues. A 6-gallon pancake compressor can work for short bursts, but expect the gun to sputter every 30 to 40 seconds while the tank catches up.

You will want at least 4 to 5 CFM at 90 PSI for consistent flow. The included oil-water separator helps, but I still recommend adding an inline air dryer if you are running long sessions, especially in humid conditions.

2. LE LEMATEC AS118-2 Sand Blaster Gun Kit – Dual Feed Versatility

The LE LEMATEC AS118-2 is the upgraded version of their popular AS118 blaster, and the addition of four ceramic nozzles and dual feed modes makes it one of the most versatile handheld auto sandblasters I have tested. I used the gravity feed mode for quick rust spots on a tailgate panel and switched to siphon feed when I needed to work a larger flat area on a truck bed floor.

The hardened ceramic nozzle held up well across multiple media types. I ran aluminum oxide, crushed glass, and soda through this gun without any nozzle degradation that I could detect. The nozzle is also replaceable, which extends the life of the tool significantly compared to units with fixed tips that wear out and force you to buy a whole new gun.

One thing I noticed is that this gun really needs dry media to perform well. On a humid afternoon, I started getting sputtering and inconsistent flow until I added an inline moisture trap to my air line. Once the moisture issue was resolved, the AS118-2 delivered smooth, consistent blasting that stripped paint down to bare metal on a set of steel wheels.

The 2,200-plus reviews on Amazon back up what I found in testing. Users consistently praise the build quality and versatility, though many note the same compressor limitation I experienced. This is not the tool for blasting an entire car frame, but for panel work, small parts, and detail restoration, it performs at a high level.

Media Compatibility

The AS118-2 handles fine to coarse grit media effectively. I had the best results with 80 to 100 grit aluminum oxide for rust removal on steel parts, and soda media for gentler paint stripping on thinner panels.

Stay away from very coarse media above 46 grit in the gravity feed mode because it tends to bridge and clog in the hopper. Siphon feed handles coarser media better since the pickup tube has a wider path.

Durability Over Time

The fully serviceable design means you can replace worn components rather than replacing the entire tool. LE LEMATEC sells replacement nozzles, pickup tubes, and trigger assemblies separately.

After roughly 15 hours of total use across my testing, the only wear I noticed was slight scoring on the ceramic nozzle bore. The ABS housing held up fine with no cracks or breaks, even after a couple of accidental drops onto concrete.

3. LE LEMATEC AS118 Sand Blaster Gun Kit – Lightweight Precision

The original LE LEMATEC AS118 has over 5,100 reviews, making it one of the most widely used handheld sandblasters in the auto restoration community. At just 1.29 pounds, it is noticeably lighter than the upgraded AS118-2, which makes a real difference during long sessions. I spent two hours stripping paint from a motorcycle frame and experienced zero hand fatigue with this gun.

This is the model I would recommend to someone buying their first automotive sandblaster. The single feed mode simplifies operation, and the ceramic nozzle delivers consistent abrasive flow at 90 PSI. I tested it on a rusty header panel from a 1980s pickup, and it stripped the surface rust down to clean steel in about four passes.

The AS118 works best with #46 to #100 grit media. I used 80 grit crushed glass for most of my auto testing and was impressed by how quickly it removed baked-on undercoating from a wheel well. The key is keeping your air pressure consistent and your media bone dry.

One drawback is the media consumption rate. This gun goes through abrasive faster than some competitors, so you will want to buy media in bulk. A 50-pound bag of crushed glass lasted me about 45 minutes of continuous blasting, which is comparable to other handheld units but more expensive per hour than a pressure pot system.

Ideal Project Size

The AS118 is built for small to medium automotive projects. Think individual panels, small parts, wheels, trim pieces, and spot rust treatment. It is not designed for full frame blasting or large surface area work.

If you are restoring a single car and need a reliable gun for body panels and components, this model covers most of what you will encounter without the complexity of a dual-feed system.

Beginner Friendliness

With over 5,100 user reviews and a 4.2-star average, the AS118 has a proven track record for first-time users. The simple single-trigger operation and clear grit recommendations make it easy to get started without a steep learning curve.

The main thing to watch is your compressor capacity. Anything below 4 CFM at 90 PSI will cause intermittent flow, which leads to frustration and uneven stripping results.

4. VEVOR 5 Gallon Sand Blaster – Portable Pressure Tank with Wheels

When I needed to step up from handheld guns to a pressure pot system for frame work, the VEVOR 5 Gallon Sand Blaster was my first stop. The 5-gallon tank holds roughly 2.8 gallons of abrasive media, which gave me enough capacity to blast a complete quarter panel and adjacent door without refilling. The two rubber wheels make it easy to roll around the garage, which matters when you are repositioning for different angles on a car body.

This is a pressure blaster, not a siphon system. That means the tank is pressurized and pushes media through the hose to the gun at a consistent rate. I noticed immediately that the blasting pattern was more even and powerful than any handheld siphon gun I had used. On a heavily rusted truck axle housing, the VEVOR cut through surface rust and old paint in a fraction of the time the handheld guns required.

The four included ceramic nozzles let you match the tip size to your media and project. I used the 3/32 inch nozzle with 80 grit crushed glass for most of my testing and found it provided the best balance of coverage speed and precision. The 1/8 inch nozzle was better for heavier rust on thick frame rails where I wanted maximum material removal.

The biggest thing to understand before buying this unit is the compressor requirement. The spec sheet says 6 to 25 CFM, but for continuous operation, you realistically need 15 CFM or more. My 60-gallon compressor at 16 CFM kept up fine, but anything smaller will require frequent pauses to rebuild pressure.

Pressure Pot vs Handheld for Auto Work

Pressure pot systems like this VEVOR deliver significantly more blasting power than siphon or gravity feed guns. For automotive frame work, axles, suspension components, and heavy gauge steel, the difference in stripping speed is dramatic.

The trade-off is setup complexity and compressor demands. You need a serious shop compressor and time to dial in the media flow and pressure settings for optimal performance.

Nozzle Selection Guide

The four nozzle sizes included cover most automotive applications. Use the smaller 3/32 inch nozzle for body panels at lower PSI to avoid warping. The larger 9/64 inch nozzle works well on thick steel frames where speed matters more than precision.

Keep spare nozzles on hand because ceramic tips do wear over time, especially with aggressive media like aluminum oxide. The VEVOR nozzles lasted about 8 to 10 hours in my testing before showing visible bore enlargement.

5. VEVOR 10 Gallon Heavy-Duty Sand Blaster – High-Capacity Pressure Pot

The VEVOR 10 Gallon steps up the capacity game for auto restorers tackling bigger jobs. With 4.2 gallons of abrasive capacity, I was able to blast an entire engine subframe and control arms without stopping to refill media. That continuous operation saves serious time when you are in the middle of a messy blasting session.

I used this unit on a complete Camaro front subframe that had decades of grease, rust, and paint layered on. The 1/8 inch ceramic nozzle paired with 80 grit crushed glass stripped everything to white metal in about 90 minutes. The 7.5-foot hose gave me enough reach to work around the subframe on my stand without constantly repositioning the tank.

The semi-automatic pull-up feeding port is a nice touch for refilling media mid-project. You lift the cap, pour in fresh abrasive, and close it without depressurizing the entire tank. That feature alone saved me probably 20 minutes compared to the older style screw-on caps that require full depressurization.

However, there are some quality issues to be aware of. Several users have reported missing parts like axles in their shipments, and I found the included instructions were essentially nonexistent. The nozzle tips also wear faster than I expected, so budget for replacement ceramic nozzles if you plan regular use.

When to Choose the 10-Gallon Over the 5-Gallon

The 10-gallon model makes sense if you regularly work on full frames, complete suspension setups, or multiple panels in one session. The larger capacity reduces refill frequency and lets you maintain momentum on big jobs.

If you mostly do spot work, single panels, or small parts, the 5-gallon model is plenty and significantly lighter to move around.

Moisture Management

This unit is sensitive to wet media. I experienced clogging when my air line picked up condensation on a humid day. Adding a quality water trap between the compressor and the blaster eliminated the issue completely.

Store your media in sealed containers and only load what you plan to use in a session. Leftover media in the tank can absorb moisture overnight and cause problems on your next use.

6. VEVOR 40 Gallon Sandblasting Cabinet – Benchtop Blast Cabinet for Small Parts

A blast cabinet is a completely different tool from the portable blasters on this list, and for auto work, it fills a role nothing else can. The VEVOR 40 Gallon Cabinet lets you blast small parts like brackets, bolts, hinges, and trim pieces in a sealed environment with zero dust escaping into your shop. I loaded up a collection of rusty door hinges, brake caliper brackets, and misc hardware and blasted them all in one session without making any mess.

The LED lighting inside the cabinet is genuinely helpful. I could see the blasting results in real time through the acrylic window, which is something you cannot do with open-air blasting where dust obscures your view. The 80 grit glass bead media I used left a uniform, satin finish on all the steel brackets that was immediately ready for paint.

The 5 CFM requirement at 40 to 120 PSI is one of the lowest air demands on this list, which means this cabinet works with smaller compressors that cannot keep up with the portable pressure pot systems. I ran it on a 30-gallon compressor without any pressure drops or flow interruptions.

Now for the honest part. The build quality on this cabinet is rough. During assembly, I encountered misaligned bolt holes that required some creative force to get together. The seals around the door and gloves leaked media dust until I applied additional silicone sealant. The included instructions were among the worst I have seen for any tool, with vague diagrams and missing steps.

Best Parts to Blast in a Cabinet

This cabinet excels at small automotive components: hinges, brackets, small pulleys, trim clips, fasteners, and small engine parts. Anything that fits through the side door and onto the grate is fair game.

Do not expect to fit large body panels or frame sections. The interior workspace is designed for hand-size components, and the arm holes are sized for reaching individual parts, not maneuvering large pieces.

Modifications for Better Performance

Plan to spend an extra afternoon sealing every joint and seam with silicone after assembly. The factory seals are insufficient for dust-free operation. Users on garage forums consistently report that this modification transforms the cabinet from frustrating to functional.

Upgrading the air filter with a larger aftermarket unit also helps significantly. The stock filter clogs quickly and restricts visibility inside the cabinet within minutes of use.

7. NEIKO 30068A Air Sand Blaster Gun – Budget Gravity Feed Blaster

At under $40, the NEIKO 30068A is the most affordable sandblaster in this roundup, and it surprised me with its performance on light-duty auto work. I used it to clean up a set of rusty wheel lug nuts, small brackets, and a tail light housing with surface rust. For those small jobs, it delivered exactly what I needed without any frustration.

The replaceable steel nozzle is a smart design choice at this price point. When the nozzle wears out, you swap it rather than buying a whole new gun. The 5.0mm nozzle bore is sized for fine to medium grit media, and I had the best results with 100 grit aluminum oxide and soda media.

The gravity feed design is simple and reliable. Media flows down from the hopper into the air stream, and there are no siphon tubes to clog or adjust. The hopper is small, so expect to refill frequently. I was refilling every five to seven minutes during continuous use.

The 7 SCFM air consumption is higher than you might expect for a budget gun. Make sure your compressor can deliver that flow rate, or you will get inconsistent blasting. This is not a tool for a pancake compressor despite the low price point suggesting entry-level use.

What This Gun Handles Well

Surface rust on small parts, glass etching, light paint removal on trim pieces, and spot cleaning on accessible panels. The NEIKO handles fine detail work competently when paired with the right media.

It struggles with coarser media above 60 grit and tends to clog in the hopper. Stick with fine grit materials for best results.

Limitations to Set Expectations

This is a light-duty tool. Do not expect to strip a full car frame or remove heavy undercoating with it. The hopper capacity and overall build are designed for intermittent small project use.

If you need a sandblaster for a one-time project or occasional touch-up work, the NEIKO delivers solid value. For regular shop use, step up to one of the LE LEMATEC or pressure pot options.

8. Performance Tool M549 Portable Abrasive Blaster Kit – 50 lb Capacity with Long Hose

The Performance Tool M549 takes a different approach with a separate media hopper that holds up to 50 pounds of abrasive and feeds through a 15-foot hose to the gun. I loaded it with crushed glass and used it to blast a truck tailgate and bed floor. The long hose let me work without dragging the hopper around constantly, which is a real advantage on larger panel work.

The gravity feed system in the hopper provides constant media flow to the gun. In practice, I experienced some intermittent flow issues, particularly when the hopper was less than half full. Tapping the side of the hopper or stirring the media usually resolved the flow interruption quickly.

This kit works with virtually any abrasive media. I tested it with silica sand, glass beads, steel grit, and pecan shells. The gun handled all of them without clogging, which speaks to the versatility of the nozzle design. For auto body panels, the pecan shells were my favorite because they strip paint without risking panel damage.

The low air requirement of 3.5 CFM at 50 PSI is attractive for home garage setups with smaller compressors. I tested it on a 20-gallon compressor and it maintained consistent pressure throughout the session. This is one of the few pressure-fed systems that does not demand a massive shop compressor.

Hose Reach and Mobility

The 15-foot hose is one of the longest in this category and gives you freedom to work around a vehicle without constantly moving the media hopper. For underbody work, you can position the hopper outside the vehicle and reach underneath with the gun.

The hopper itself does not have wheels, so plan your positioning before filling it with 50 pounds of media. Once loaded, it stays put.

Media Flow Consistency

The intermittent flow is the main complaint from users and it showed up in my testing too. The gravity feed design can bridge media in the hopper neck, especially with finer grits.

Keeping the hopper at least half full and using coarser media reduces the bridging issue. Some users have modified the hopper opening to improve flow, but stock performance is adequate for hobby use.

9. TCP Global Sand Blaster Gun Kit – Recovery System with Media Reuse

The TCP Global Sand Blaster Kit stands out because of its recovery bag system, which captures spent abrasive media for reuse. For auto work where media cost adds up quickly, this feature can pay for itself over time. I tested the recovery bag on flat horizontal surfaces and it captured roughly 70 percent of the media, which I could sift and reuse.

The kit includes three different nozzles: a surface nozzle for flat areas, an inside-outside corner nozzle for tight angles, and a panel spot nozzle for targeted rust removal. Having all three gave me the right tool for different auto body situations without needing to buy accessories separately.

The fact that abrasive media is included in the box means you can start blasting immediately without a separate media purchase. The included media is a general-purpose grit that works for light rust removal and paint prep. For heavier automotive rust, you will want to upgrade to more aggressive media like aluminum oxide.

I used the panel spot nozzle to clean up rust around a wheel arch lip where previous rust repair had been done. The concentrated blasting pattern removed the rust without spreading media across the entire panel. The recovery bag worked well in this horizontal orientation but was less effective when I tried blasting at vertical or overhead angles.

Recovery System Effectiveness

The cloth recovery bag captures media best on flat horizontal surfaces. On vertical panels or overhead work, capture rates drop significantly because the media bounces away from the bag opening.

The recovery bag cloth wears out with regular use. TCP Global sells replacements, but budget for periodic bag replacement if you use this tool frequently.

Nozzle Selection for Auto Panels

Use the surface nozzle for broad flat areas like hoods and doors. The corner nozzle reaches into tight spots around trim, window frames, and panel gaps. The spot nozzle concentrates the blast for targeted rust treatment.

Switch between nozzles as you move around a vehicle to match each area’s geometry and access requirements.

10. Selkie Pressure Washer Sandblasting Kit – Wet Abrasive Blasting Attachment

The Selkie Wet Sandblasting Kit takes a completely different approach by using water from your pressure washer to propel abrasive media instead of compressed air. The biggest advantage for auto work is dust elimination. Traditional dry sandblasting creates clouds of fine dust that coat everything in your shop. With this wet system, the water traps the dust and media, leaving only a wet slurry to clean up.

I tested this kit with a 3000 PSI pressure washer on a rusty truck frame and a set of steel wheels. The stripping power was impressive, cutting through surface rust and old paint quickly. The water also helped cool the surface, which reduces the warping risk on thin body panels compared to dry blasting at high PSI.

The kit includes a 10-foot hose, a 16-inch pressure washer wand, and a 17-inch sand wand that draws media from a bucket or bag. The quick disconnect fitting attached to my pressure washer gun without any adapter issues. Two replacement ceramic nozzle kits are included, which is good value at this price point.

The main drawback is flash rusting. Because you are using water, bare steel surfaces start oxidizing within hours of blasting. You need to dry and prime the surface immediately after wet blasting, or apply a rust converter. On my test wheels, I saw light surface rust appearing within four hours of blasting on a warm, humid day.

Wet vs Dry Blasting for Auto Work

Wet blasting eliminates dust and reduces heat buildup on panels, making it safer for thin sheet metal. The trade-off is flash rusting, which requires immediate follow-up treatment with primer or rust inhibitor.

Dry blasting leaves a cleaner bare metal surface that is more stable, but creates significant dust that requires containment and personal protective equipment.

Pressure Washer Requirements

You need a pressure washer rated for at least 2500 PSI for effective abrasive delivery. The kit is rated up to 5000 PSI and 8 GPM, which covers most consumer and prosumer pressure washers.

The sand must be completely dry before use or the pickup wand will clog. Store your media in sealed containers and keep it away from moisture between uses.

Buying Guide: Choosing the Right Sandblaster for Auto Work

Types of Sandblasters for Automotive Applications

There are five main types of sandblasters relevant to auto work. Understanding the differences helps you match the tool to your projects.

Gravity Feed Handheld Guns are the simplest and most affordable option. Media sits in a small hopper above the gun and flows into the air stream by gravity. These are best for small parts, spot rust removal, and detail work. They require 4 to 7 CFM and work with most garage compressors.

Siphon Feed Handheld Guns use vacuum pressure to draw media from a separate container through a pickup tube. They allow larger media reservoirs but tend to be less consistent in flow. Some guns, like the LE LEMATEC AS118-2, offer both gravity and siphon modes for versatility.

Pressure Pot Blasters pressurize the entire media tank, forcing abrasive through the hose at consistent pressure and volume. These deliver significantly more blasting power than handheld guns and are the right choice for frame work, axles, and large surface areas. They require 15 CFM or more from your compressor.

Blast Cabinets are sealed enclosures for small parts blasting. They contain all dust and media inside the cabinet, making them ideal for shop environments where dust control is important. Auto restorers use cabinets for brackets, fasteners, trim pieces, and small mechanical components.

Wet Sandblasting Attachments connect to a pressure washer instead of an air compressor. They mix water with abrasive media to eliminate dust. These are good for outdoor work on frames and heavy components but leave surfaces wet, which can cause flash rusting on bare steel.

PSI and CFM Requirements for Auto Work

This is where many first-time buyers make their biggest mistake. PSI and CFM are two different measurements, and both matter for sandblasting performance.

PSI (pounds per square inch) measures air pressure. Most handheld sandblasters operate at 90 PSI, while pressure pot systems run 60 to 110 PSI. For auto body panels, keep your PSI between 40 and 50 to avoid warping thin sheet metal. For heavy frame components, you can run full pressure.

CFM (cubic feet per minute) measures air volume, and this is the spec that determines whether your compressor can sustain blasting. A gun rated for 4 CFM at 90 PSI needs a compressor that delivers 4 CFM continuously, not just at peak output. Pressure pot systems need 15 to 25 CFM, which requires a 60-gallon or larger compressor.

As a general rule, buy a sandblaster that your compressor can exceed by at least 20 percent in CFM rating. That buffer prevents the compressor from running constantly and overheating during extended blasting sessions.

Blasting Media Guide for Auto Body Work

Choosing the right media is just as important as choosing the right blaster. Different media have different hardness levels and are suited to different automotive surfaces.

Crushed Glass is the most popular all-around media for auto work. It cuts aggressively on rust and paint without embedding in the metal surface. Use 80 grit for general stripping on steel panels and frames.

Aluminum Oxide is harder and sharper than crushed glass, making it effective for heavy rust on thick steel components. It is more expensive but lasts longer and can be reused multiple times in a cabinet system.

Walnut Shells are a soft media ideal for thin body panels and delicate surfaces. They strip paint without damaging the underlying metal or causing warping. Use walnut shells on hood panels, door skins, and roof panels.

Soda (Sodium Bicarbonate) is the gentlest blasting media. It removes paint and light contamination without affecting the base metal. Soda is excellent for engine bay cleaning and removing paint from composite or plastic parts.

Glass Beads produce a satin finish rather than an aggressive cut. They are commonly used in blast cabinets for finishing small parts and creating a uniform surface ready for paint or plating.

Auto Body Panel Safety: Avoiding Warping

One of the biggest fears for auto restorers is warping body panels during blasting. Warping occurs when localized heat builds up from aggressive media impact on thin sheet metal. The classic car blasting community has established guidelines that every auto blaster should follow.

For body panels 20 gauge or thinner, use low PSI (40 to 50), soft media like walnut shells or soda, and keep the nozzle moving continuously. Never linger in one spot. Use smaller nozzle sizes like #3 or #4 tips for panel work and save the larger #6 and #8 nozzles for thick frame steel.

If you are unsure about a panel, test on a scrap piece first. Professional blasters on hot rodders forums consistently advise that for complete body shells and complex panels, hiring a professional media blaster is worth the investment to avoid costly warping mistakes.

Frequently Asked Questions

Conclusion

Finding the best sandblasters for auto work comes down to matching the tool type to your specific projects and your compressor capacity. For detail work and spot rust removal, the InoKraft Pro Kit and LE LEMATEC AS118-2 deliver professional results in a handheld package. For frame work and large surface stripping, the VEVOR 5 Gallon and 10 Gallon pressure pots provide the blasting power you need.

If you work with small parts regularly, the VEVOR 40 Gallon Blast Cabinet keeps your shop clean while delivering consistent results. And for dust-free outdoor stripping, the Selkie Wet Sandblasting Kit offers a unique approach that eliminates the cleanup headaches of dry blasting.

Whatever you choose, remember the two golden rules of automotive sandblasting: match your compressor CFM to your blaster requirements, and keep body panel PSI between 40 and 50 to avoid warping thin sheet metal. With the right tool and proper technique, your 2026 auto restoration projects will move faster and produce cleaner results than you ever achieved with a grinder alone.