4" x 36" Surface Conditioning Belts (Non-Woven)
4" x 36" Surface Conditioning Belts (Non-Woven)
Available in stock (49993)
Most small shops already own the machine for these belts: the 4 x 36 belt and disc combination sander sold by WEN, Rikon, Ryobi, Bauer, Central Machinery and Bucktool. Swap the coated belt for a non-woven one and that same bench sander deburrs sheared parts, blends grinder marks, cleans rust off tooling and puts a satin finish on knife handles, brackets and small stainless parts without eating into them.
These 4" x 36" surface conditioning belts are sold one at a time in your choice of Coarse, Medium, Very Fine or Ultra Fine, so you can keep one of each on the shelf. The web is nylon impregnated with aluminum oxide grain on a reinforced scrim backing, and it can be run wet or dry on steel, stainless, aluminum, titanium, fiberglass and plastics.
- Fits 4 x 36 bench sanders: WEN 6502T, Rikon 50-112, Ryobi BD4601G, Bauer 58339, Central Machinery 58360, Bucktool BD4603/BD4801-M
- Sold individually so you can build a set of all four grades without buying multiples
- Grades from 40–60 to 320–400 grit scratch for cleanup through satin finishing
- Scrim backing tracks true on the belt arm whether it is horizontal or vertical
- Cool, conformable web deburrs and blends without changing part dimensions
- Free shipping on orders over $200; case pricing on request
Which grade should you keep on a bench sander?
On a bench sander you bring the part to the belt, which makes it easy to control pressure and to switch belts between steps. Here is where each grade earns its place.
- Coarse (40–60 grit scratch), brown: removing rust and scale from tooling, brackets and hardware; cleaning castings; stripping old coatings from small parts. On a bench sander it will round an edge quickly, so keep the part moving.
- Medium (80–120 grit scratch), maroon: deburring sheared, sawn and laser-cut edges, blending the marks from a 120 grit coated belt, and prepping small steel and aluminum parts for paint or powder coat. If you buy one belt, buy this one.
- Very Fine (180–240 grit scratch), blue: a directional satin on stainless brackets, knife bolsters and guards, and aluminum parts; the #4-style brushed look.
- Ultra Fine (320–400 grit scratch), grey: the finest satin, used on decorative stainless, brass and aluminum and as the pre-polish step before a buffing wheel.
Knife makers using a 4 x 36 as a budget grinder usually run Medium after their 120 grit belt for a working finish and Very Fine for a satin on show pieces.
Grade guide for small-part deburring and finishing
| Grade | Use it for | Notes |
|---|---|---|
| Coarse 40–60 | Rust, scale, coatings on small parts | Rounds edges if you dwell |
| Medium 80–120 | Deburring, blending, paint prep | First belt to buy |
| Very Fine 180–240 | Satin on stainless, knife fittings | After 180–220 coated |
| Ultra Fine 320–400 | Fine satin, pre-buff | Lightest touch |
Non-woven belts refine the scratch left by a coated belt. Do the shaping with a coated aluminum oxide or zirconia belt first, then switch.
Which bench sanders take a 4 x 36 belt?
- WEN 6502T (and the WEN 6502 named on our earlier page)
- Rikon 50-112
- Ryobi BD4601G
- Bauer 58339 and Central Machinery 58360 (Harbor Freight)
- Bucktool BD4603 and BD4801-M
- Grizzly G0787, SKIL 3376 and Linishall 915, as named on our earlier page for this size
Fitting: release the belt tension lever, slide the belt over the drive and idler drums, re-tension and run the sander with nothing touching the belt while you turn the tracking knob until it rides centered. Non-woven belts have no direction arrow. They are thicker than cloth belts, so make small tracking changes and let the belt settle. The belt arm on most of these machines tilts from horizontal to vertical; the belt works in either position, and the vertical position with the small table is the easiest for controlled deburring of small parts.
How to get the most out of them
- Shape and grind on a coated belt first. Bring the part to an even 120 grit (for Medium) or 180–220 grit (for Very Fine) with a coated belt, then change to the non-woven belt. The web will not remove a coarse scratch.
- Present the part lightly. The belt should barely deflect. Pressing hard into the platen compresses the web, heats the part and pulls fibers off the scrim.
- Use the platen for flats and the slack section for curves. Flat parts and bevels go on the platen for a straight scratch; handles, radii and tubing go over the slack belt between the platen and the top drum, where the web wraps the shape.
- Keep the part moving in one direction for satin. Draw a stainless part across the belt in one steady pass and lift off. Repeated passes in the same line give a continuous brushed grain.
- Lubricate aluminum and brass. A drop of cutting fluid or a water mist keeps soft metals from smearing into the web. The belt is waterproof; wipe the sander's table dry afterwards.
- Blow out, hang up, keep dry. Clear the web with compressed air, hang belts on a wide peg, and keep them out of sunlight. A belt eraser at light pressure will lift packed swarf from a loaded belt.
Use it for / don't use it for
Use it for
- Deburring sheared, sawn, drilled and laser-cut parts
- Satin finishing knife bolsters, guards, folder parts and small stainless brackets
- Removing rust and scale from tooling, hardware and small castings
- Blending grinder marks and prepping small parts for paint, powder coat or plating
- Cleaning oxidation from aluminum and brass before polishing
- Scuffing fiberglass and plastic parts
Don't use it for
- Shaping, grinding or stock removal; that is a coated belt job
- The disc side of the machine; this is a belt, and we sell PSA discs separately
- 4 x 24 portable sanders; the length is wrong
- A mirror finish; follow Ultra Fine with a buffing wheel and compound
Specifications
| Size | 4" x 36" |
|---|---|
| Abrasive | Aluminum oxide in a non-woven nylon web |
| Backing | Reinforced scrim, stretch-resistant |
| Grades offered | Coarse (40-60), Medium (80-120), Very Fine (180-240), Ultra Fine (320-400) |
| Color code | Brown / maroon / blue / grey |
| Joint | Bi-directional, no arrow |
| Pack quantity | Sold individually, one belt per grade |
| Wet or dry | Both |
| Fits | 4 x 36 bench belt/disc combination sanders |
| Converted in | Anaheim, California |
| Custom sizes | Made to order in about 3 days |
Frequently asked questions
Will a 4 x 36 surface conditioning belt fit my Harbor Freight or WEN belt sander?
Yes. The Bauer 58339 and Central Machinery 58360 from Harbor Freight and the WEN 6502T all take a 4" x 36" belt, as do the Rikon 50-112, Ryobi BD4601G and Bucktool BD4603 and BD4801-M. Mount the non-woven belt the same way as a coated belt and set tracking with the machine running before touching a part to it.
Can I finish a knife handle or bolster with these belts on a 4 x 36 sander?
Yes. Bring the bolster or guard to 180–220 grit with a coated belt, then use the Very Fine (blue) 4 x 36 belt over the slack section or platen with light pressure and single-direction passes for an even satin. Use Ultra Fine (grey) for a finer satin before buffing. Keep the part cool and moving so you do not round crisp lines.
Is this one belt or a pack?
This listing is for a single 4" x 36" belt in the grade you choose, so you can buy one Coarse, one Medium, one Very Fine and one Ultra Fine to cover every job on a bench sander. If you go through a particular grade quickly, bulk and case pricing is available by calling 714-646-3299 or emailing sales@maverickabrasives.com.
Does the belt work in the vertical position on a combo sander?
Yes. A 4 x 36 non-woven belt tracks the same whether the belt arm is horizontal or tilted vertical. The vertical position with the small table is often the better choice for deburring small parts because you can rest the part on the table and control the angle and pressure. Re-check tracking after tilting the arm.
Which grade removes rust from tools and hardware without damaging them?
Medium (maroon, 80–120 grit scratch) removes light to moderate rust from tooling, hardware and machine parts and leaves a clean matte without cutting into the metal. Use Coarse (brown) for heavy scale, and Very Fine (blue) if you want a brighter satin afterwards. Keep pressure light so you do not round edges or change fits.
Can these belts be used on the disc side of my belt/disc sander?
No. This is a 4" x 36" belt for the belt arm only. The disc side takes a PSA sanding disc of the diameter printed on your machine. Run the non-woven belt on the belt arm for deburring and satin finishing, and use the disc with a coated abrasive for squaring ends and flat grinding.
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