9" x 48" Surface Conditioning Belts (Non-Woven)

Small fabrication shops, knife makers and prototype departments do not need a 37-inch machine to put a proper satin finish on parts; they need the right belt on the compact machine they already have. These 9" x 48" surface conditioning belts bring the same non-woven finishing web used on industrial graining lines down to 9-inch wide belt sanders and 9-inch edge sanders, for deburring, cleaning and brushed finishes on stainless, aluminum, steel and titanium parts that fit across a 9-inch belt.

The web is aluminum oxide grain in a nylon fibre matrix on a reinforced scrim backing. Four grades are stocked, Coarse, Medium, Very Fine and Ultra Fine, each sold as a single belt; note that the grit equivalents for this size run finer than our wider belts, and the grade guide below is specific to it.

• Fits compact 9-inch wide belt sanders and 9-inch edge sanders that take a 48-inch belt
• Grades from Coarse (60–80 equivalent) to Ultra Fine (320–400 equivalent) for cleaning through pre-buff satin
• Non-woven web conforms to small parts and runs cool, with almost no stock removal
• Reinforced scrim backing tracks reliably on machine tension
• Sold individually, so a small shop can stock a full grade set at low cost
• Converted in Anaheim, California; free shipping on orders over $200

Which grade should you choose for small-part finishing?

The four grades share the same web and backing; the grain size changes. On this size the Medium and Very Fine grades sit finer than on our wider belts, which suits the fine, close-up work small parts usually get.

• Coarse (60-80 Grit), brown: cleaning and deburring. It removes light rust, oxidation, heat tint and mill haze, rolls the burr on laser-cut and sheared blanks and lays an open brushed grain on aluminum. It removes measurable material if you lean on it, so keep pressure light.
• Medium (150-180 Grit), maroon: the general satin grade for this size. Behind a 120–150 grit coated belt it blends the scratch and leaves a clean directional satin on stainless brackets, knife bolsters, aluminum housings and small panels.
• Very Fine (220-280 Grit), blue: the fine brushed finish. Behind a 180–220 grit coated belt it gives stainless and aluminum parts a #4-style grain with low contrast, the finish most small stainless fabrications and knife fittings are shipped with.
• Ultra Fine (320-400 Grit), grey: pre-buff and fine satin. Run after Very Fine on parts headed for buffing or anodizing, or where a near-smooth matte is specified. It refines an existing finish; it does not remove scratches.

A small shop that finishes mixed stainless and aluminum parts is well served by a Medium and a Very Fine belt, with Coarse for cleanup and Ultra Fine for pre-polish.

Grade guide for stainless, aluminum and steel parts on a 9" x 48" belt

Keep the coated grit within one step of the non-woven grade. A part that comes off a 60 grit coated belt needs 120 and 180 or 220 coated passes before the Very Fine belt will give a clean finish.

Which machines take a 9" x 48" surface conditioning belt?

• Compact 9-inch wide belt sanders and small drum-and-platen finishing machines specified for a 9" x 48" belt, the smallest of the automated graining machines this belt family is built for.
• 9-inch edge sanders and small stroke-style sanders that run a 48-inch belt, used hand-fed for deburring and satin finishing of small parts.

Match width and length to your manual; length tolerance on most machines is about a quarter inch. The belt has no direction arrow and mounts either way. Tension to the maker's setting, centre the tracking with the machine jogged, and set platen or drum pressure lighter than for a coated belt of the same size. On a hand-fed edge sander, let the part float against the platen rather than forcing it. Metal swarf goes to a metal-rated or wet collector, never a wood-dust system. For a matching coated belt in this size, see our 9" x 48" aluminum oxide and zirconia belts.

How to get the most out of it

1. Set the scratch with a coated belt first. 120–150 grit before Medium, 180–220 grit before Very Fine and Ultra Fine. Non-woven web refines the previous scratch; it does not erase a coarse one.
2. Light pressure. The web does the work. On a hand-fed machine that means resting the part against the belt, not pushing; on an automated head it means the lightest setting that gives a continuous grain line.
3. Keep the part moving in one direction. Feed or stroke parallel to belt travel, always the same way, so the grain reads straight. Never rotate a part between passes on a directional finish.
4. Work the whole belt width. Small parts wear a groove in the centre of a 9-inch belt if they always run in the same place. Move across the width so the web wears evenly.
5. Use a light lubricant on aluminum. A mist or a grease stick swipe stops aluminum smearing into the web. Stainless and steel run dry; dip small stainless parts in water between passes if they get warm.
6. No belt eraser. Crepe rubber pulls web fibres. The belt sheds swarf on its own with good extraction.
7. Hang it to store. A folded non-woven belt creases and prints a line on the next part.

Use it for / don't use it for

Use it for

• Satin and #4-style brushed finishes on small stainless and aluminum fabrications
• Knife bolsters, guards, fittings and small hardware before buffing
• Deburring laser-cut, sheared and machined parts without changing dimensions
• Removing heat tint, light rust, oxidation and mill haze from small parts
• Blending a 120–220 grit coated scratch before paint, powder coat, anodizing or polishing
• Titanium, non-ferrous alloys, fiberglass and plastics that need a uniform matte

Don't use it for

• Stock removal, weld grinding or shaping; use a coated zirconia or ceramic belt
• Removing scratches coarser than the previous coated grit
• Mirror finishes; follow Ultra Fine with buffing wheels and compound
• Heavy pressure, which tears the web and heats thin parts

Specifications

Frequently asked questions

Related products and guides

• All surface conditioning belts, discs and flap discs
• 9" x 48" Sanding Belts, 4 pack (coated companion)
• Knife making abrasives
• All sanding belts
• Custom belt sizes made to order in about 3 days