Ceramic Files | McMaster-Carr

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98 Products

About Polishing Stones and Bobs

Match grit size and micron ratings to the texture, appearance, and flatness you need to achieve.

Detail Polishing Stones

Smooth ribs, slots, teeth, and other fine features—these stones are thin enough to slip into hard-to-reach areas. Made of bonded ceramic, they’re harder and more wear resistant than aluminum oxide stones, but flexible enough not to crack under pressure. Pair with a holder (sold separately) to polish by hand or with a power tool, such as an ultrasonic polisher. Apply a water-soluble or oil-based lubricant to help keep debris from building up on the surface.

Straight Round

	Dia.		Each
Ceramic—For Aluminum, Brass, Bronze, Copper, Iron, Nickel, Steel, Stainless Steel, and Titanium







		80 Grit (For Smooth Finish)

		1/8"	2"	Purple	4805A21	000000




				120 Grit (For Smooth Finish)

				1/8"	2"	Green	47465A724	00000




						180 Grit (For Smooth Finish)

						1/8"	2"	Gold	4805A171	00000




								240 Grit (For Extra-Smooth Finish)

								1/8"	2"	Brown	4805A173	00000




										400 Grit (For Extra-Smooth Finish)

										1/8"	2"	Orange	4805A181	00000




												600 Grit (For Polished Finish)

												1/8"	2"	Black	47465A725	00000




														800 Grit (For Polished Finish)

														1/8"	2"	Blue	4805A182	00000




																1000 Grit (For Polished Finish)

																1/8"	2"	White	4805A183	00000




																		1200 Grit (For Polished Finish)

1/8"	2"																	Red	47465A726	00000

Accessories for Stones

For No. of Stones	For Stone Diameter		Each
1	1/8"	4805A33	00000

Thread Size		Each
M6 × 0.75 mm	9657N52	000000

Straight Rectangular

	Lg.	Wd.	Thk.	Color		Each
Ceramic—For Aluminum, Brass, Bronze, Copper, Iron, Nickel, Steel, Stainless Steel, and Titanium







				80 Grit (For Smooth Finish)

				4"	5/64"	1/64"	Purple	4805A22	000000


				4"	5/64"	3/64"	Purple	4805A23	00000
				4"	5/32"	1/64"	Purple	4805A24	00000
				4"	5/32"	3/64"	Purple	4805A25	00000
				4"	15/64"	1/64"	Purple	4805A26	00000
				4"	15/64"	3/64"	Purple	4805A27	00000
				4"	25/64"	3/64"	Purple	4805A28	00000




						120 Grit (For Smooth Finish)

						4"	5/64"	1/64"	Green	47465A681	00000


						4"	5/64"	3/64"	Green	47465A701	00000
						4"	5/32"	1/64"	Green	47465A691	00000
						4"	5/32"	3/64"	Green	47465A711	00000
						4"	15/64"	1/64"	Green	47465A674	00000
						4"	15/64"	3/64"	Green	47465A677	00000
						4"	25/64"	3/64"	Green	47465A721	00000




								180 Grit (For Smooth Finish)

								4"	5/64"	1/64"	Gold	47465A682	00000


								4"	5/64"	3/64"	Gold	47465A702	00000
								4"	5/32"	1/64"	Gold	47465A692	00000
								4"	5/32"	3/64"	Gold	47465A712	00000
								4"	15/64"	1/64"	Gold	4805A111	00000
								4"	15/64"	3/64"	Gold	4805A131	00000
								4"	25/64"	3/64"	Gold	4805A151	00000




										240 Grit (For Extra-Smooth Finish)

										4"	5/64"	1/64"	Brown	47465A683	00000


										4"	5/64"	3/64"	Brown	47465A703	00000
										4"	5/32"	1/64"	Brown	47465A693	00000
										4"	5/32"	3/64"	Brown	47465A713	00000
										4"	15/64"	1/64"	Brown	4805A113	00000
										4"	15/64"	3/64"	Brown	4805A133	00000
										4"	25/64"	3/64"	Brown	4805A153	00000




										400 Grit (For Extra-Smooth Finish)

		4"								5/64"	1/64"	Orange	47465A684	00000


		4"	5/64"							3/64"	Orange	47465A704	00000
		4"	5/32"							1/64"	Orange	47465A694	00000
		4"	5/32"							3/64"	Orange	47465A714	00000
		4"	15/64"							1/64"	Orange	4805A121	00000
		4"	15/64"							3/64"	Orange	4805A141	00000
		4"	25/64"							3/64"	Orange	4805A161	00000




										600 Grit (For Polished Finish)

				4"						5/64"	1/64"	Black	47465A685	00000


				4"	5/64"					3/64"	Black	47465A705	00000
				4"	5/32"					1/64"	Black	47465A695	00000
				4"	5/32"					3/64"	Black	47465A715	00000
				4"	15/64"					1/64"	Black	47465A675	00000
				4"	15/64"					3/64"	Black	47465A678	00000
				4"	25/64"					3/64"	Black	47465A722	00000




										800 Grit (For Polished Finish)

						4"				5/64"	1/64"	Blue	47465A686	00000


						4"	5/64"			3/64"	Blue	47465A706	00000
						4"	5/32"			1/64"	Blue	47465A696	00000
						4"	5/32"			3/64"	Blue	47465A716	00000
						4"	15/64"			1/64"	Blue	4805A122	00000
						4"	15/64"			3/64"	Blue	4805A142	00000
						4"	25/64"			3/64"	Blue	4805A162	00000




										1000 Grit (For Polished Finish)

								4"		5/64"	1/64"	White	47465A687	00000


								4"	5/64"	3/64"	White	47465A707	00000
								4"	5/32"	1/64"	White	47465A697	00000
								4"	5/32"	3/64"	White	47465A717	00000
								4"	15/64"	1/64"	White	4805A123	00000
								4"	15/64"	3/64"	White	4805A143	00000
								4"	25/64"	3/64"	White	4805A163	00000




										1200 Grit (For Polished Finish)

4"										5/64"	1/64"	Red	47465A688	00000


4"	5/64"									3/64"	Red	47465A708	00000
4"	5/32"									1/64"	Red	47465A698	00000
4"	5/32"									3/64"	Red	47465A718	00000
4"	15/64"									1/64"	Red	47465A676	00000
4"	15/64"									3/64"	Red	47465A679	00000
4"	25/64"									3/64"	Red	47465A723	00000

Accessories for Stones

Hand-Held Stone Holders

For No. of Stones	For Stone Wd. × Thk.		Each
1	5/64" × 1/64" 5/64" × 3/64"	47465A104	00000
1	5/32" × 1/64" 5/32" × 3/64"	47465A103	0000
1	15/64" × 1/64" 15/64" × 3/64"	4805A31	0000
1	25/64" × 1/64" 25/64" × 3/64"	4805A32	0000

For Max. Stone Wd. × Thk.	Thread Size		Each
1/32" × 1/32"	M6 × 0.75 mm	9657N53	000000
3/8" × 3/64"	M6 × 0.75 mm	9657N51	00000

Miniature Detail Polishing Stones

About the size of pencil lead, these stones polish your smallest ribs, slots, and crevices in molds and dies. Don’t underestimate their thin profile—they’re made of bonded ceramic, which makes them tough yet flexible. This means they won’t snap like pencil lead does when you apply pressure during polishing. These stones also resist wear, so they last a long time. Pair them with a holder to polish by hand or with an ultrasonic polisher (both sold separately). Apply a water-soluble or oil-based lubricant to help keep debris from building up on the surface.

Straight Square

	For Finish	Lg.	Wd.	Thk.	Color	Lubrication		Each
Ceramic—For Aluminum, Brass, Bronze, Copper, Iron, Nickel, Steel, Stainless Steel, and Titanium



	80	Smooth	2"	1/32"/0.9 mm	1/32"/0.9 mm	Purple	Not Required	9649N22	00000


	120	Smooth	2"	1/32"/0.9 mm	1/32"/0.9 mm	Green	Not Required	9649N23	0000
	180	Smooth	2"	1/32"/0.9 mm	1/32"/0.9 mm	Gold	Not Required	9649N24	0000
	320	Extra Smooth	2"	1/32"/0.9 mm	1/32"/0.9 mm	Brown	Not Required	9649N25	0000
	400	Extra Smooth	2"	1/32"/0.9 mm	1/32"/0.9 mm	Orange	Not Required	9649N26	0000
	600	Polished	2"	1/32"/0.9 mm	1/32"/0.9 mm	Black	Not Required	9649N27	0000
	800	Polished	2"	1/32"/0.9 mm	1/32"/0.9 mm	Blue	Not Required	9649N28	0000
	1000	Polished	2"	1/32"/0.9 mm	1/32"/0.9 mm	White	Not Required	9649N29	0000
	1200	Polished	2"	1/32"/0.9 mm	1/32"/0.9 mm	Red	Not Required	9649N31	0000

Accessories for Stones

For No. of Stones	For Stone Wd. × Thk.		Each
1	1/32" × 1/32"	47465A195	000000

For Max. Stone Wd. × Thk.	Thread Size		Each
1/32" × 1/32"	M6 × 0.75 mm	9657N53	000000

Miniature Detail Polishing Stone Assortments

Keep stones of different grits on hand to handle every stage of polishing on the smallest ribs, slots, and crevices. These stones are as thin as pencil lead, but stronger than they appear—made of bonded ceramic, they are tough yet flexible. They won’t snap like lead when you apply pressure. These stones also resist wear, so they last a long time. Pair them with a holder to polish by hand or with an ultrasonic polisher (sold separately). To keep debris from building up, apply a water-soluble or oil-based lubricant during use.

	Includes	Color		Each
Ceramic—For Aluminum, Brass, Bronze, Copper, Iron, Nickel, Steel, Stainless Steel, and Titanium



	5	One 1/32" Wd. Hand-Held Stone Holder One each 120, 320, 600, 1200-grit Stones—2" Lg. × 1/32" (0.900 mm) Wd. × 1/32" (0.900 mm) Thick.	Black, Brown, Green, Red	9659N44	000000

Accessories and Replacements for Stones

For No. of Stones	For Stone Wd. × Thk.		Each
1	1/32" × 1/32"	47465A195	000000

For Max. Stone Wd. × Thk.	Thread Size		Each
3/8" × 3/64"	M6 × 0.75 mm	9657N51	000000

Detail Polishing Stone Assortments

Keep stones in different grits on hand to smooth ribs, slots, teeth, and other fine features. The stones in these assortments are thin enough to slip into hard-to-reach areas. Made of bonded ceramic, they’re harder and more wear resistant than aluminum oxide stones, but flexible enough not to crack under pressure. Pair these stones with a holder to polish by hand or with a power tool, such as an ultrasonic polisher. Some holders are sold separately. Apply a water-soluble or oil-based lubricant to help keep debris from building up on the surface.

Straight Round

	Includes	Color		Each
Ceramic—For Aluminum, Brass, Bronze, Copper, Iron, Nickel, Steel, Stainless Steel, and Titanium



	6	One 1/8" Dia. Hand-Held Stone Holder One each 180, 300, 600, 800, 1200-grit Stones—2" Lg. × 1/8" Dia.	Blue, Brown, Gold, Green, Red	9568N36	0000000

Hand-Held Stone Holders

For No. of Stones	For Stone Diameter		Each
1	1/8"	4805A33	00000

Straight Rectangular

	Includes	Color		Each
Ceramic—For Aluminum, Brass, Bronze, Copper, Iron, Nickel, Steel, Stainless Steel, and Titanium



	3	One each 80, 120, 180-grit Stones—4" Lg. × 5/32" Wd. × 3/64" Thick.	Gold, Green, Purple	9568N33	000000


	3	One each 80, 120, 180-grit Stones—4" Lg. × 15/64" Wd. × 3/64" Thick.	Gold, Green, Purple	9568N34	00000
	5	One each 120, 180, 300, 800, 1200-grit Stones—4" Lg. × 5/32" Wd. × 3/64" Thick.	Blue, Brown, Gold, Green, White	9568N31	00000
	5	One each 120, 180, 300, 800, 1200-grit Stones—4" Lg. × 15/64" Wd. × 3/64" Thick.	Blue, Brown, Gold, Green, White	9568N32	000000
	12	One 5/32" Wd. Hand-Held Stone Holder One 15/64" Wd. Hand-Held Stone Holder One each 120, 180, 300, 800, 1200-grit Stones—4" Lg. × 5/32" Wd. × 3/64" Thick. One each 300, 400, 600, 800, 1000-grit Stones—4" Lg. × 15/64" Wd. × 3/64" Thick.	Blue, Brown, Gold, Gray, Green, Red, White, Yellow	9568N35	000000

Accessories for Stones

For No. of Stones	For Stone Wd. × Thk.		Each
1	5/32" × 1/64" 5/32" × 3/64"	47465A103	00000
1	15/64" × 1/64" 15/64" × 3/64"	4805A31	0000

For Max. Stone Wd. × Thk.	Thread Size		Each
3/8" × 3/64"	M6 × 0.75 mm	9657N51	000000

Edge-Straightening and Sharpening Knife Steels

Remove heavy surface defects to restore warped and worn blades back into cutting shape. Coated with an abrasive, these knife steels remove metal to sharpen your blade while also straightening it.

Ceramic Abrasive—Remove light amounts of material to refine and polish your blade edge. They're often used as a finishing step after coarser material removal or for regular touch-ups on blades that are still somewhat sharp.

Hand Guard—An oversized guard at the end of the handle keeps your hand safely out of the way.

	Overall Lg.	Material	Handle Material	Features		Each
Ceramic Abrasive







	For Straight Blade Edges

	3000 (Polished)	12"	1/2"	17"	Ceramic	Rubber	Hand Guard	3790A31	000000