Triangular Polishing Stones

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40 Products

About Polishing Stones and Bobs

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

Clog-Resistant Polishing Stones for Steel

No need to stop and clean these stones as you polish—they’re filled with oil to keep debris from getting stuck in the pores. Use a holder to polish by hand or with a power tool (both sold separately). You’ll also need a water-soluble or oil-based lubricant to wash away debris and reduce friction and heat on your workpiece.

Straight Triangular

Aluminum Oxide Abrasive—Aluminum oxide stones, also known as India stones, scrape away material slowly to give you more control over how much material you take off. They are good for the final stage of polishing.

	Lubrication		Each
Aluminum Oxide—For Steel







	100 Grit (For Smooth Finish)

	4"	1/4"	Gray	Lubricated, Required	4498A13	000000


	4"	3/8"	Gray	Lubricated, Required	4498A33	00000
	4"	1/2"	Gray	Lubricated, Required	4498A43	00000
	6"	1/2"	Gray	Lubricated, Required	4498A63	00000
	6"	3/4"	Gray	Lubricated, Required	4498A73	00000
	6"	1"	Gray	Lubricated, Required	4498A83	00000




			240 Grit (For Extra-Smooth Finish)

			4"	1/4"	Brown	Lubricated, Required	4498A12	00000


			4"	3/8"	Brown	Lubricated, Required	4498A32	00000
			4"	1/2"	Brown	Lubricated, Required	4498A42	00000
			6"	1/2"	Brown	Lubricated, Required	4498A62	00000
			6"	3/4"	Brown	Lubricated, Required	4498A72	00000
			6"	1"	Brown	Lubricated, Required	4498A82	00000




					320 Grit (For Extra-Smooth Finish)

					4"	1/4"	Orange	Lubricated, Required	4498A11	00000


					4"	3/8"	Orange	Lubricated, Required	4498A31	00000
					4"	1/2"	Orange	Lubricated, Required	4498A41	00000
					6"	1/2"	Orange	Lubricated, Required	4498A61	00000
					6"	3/4"	Orange	Lubricated, Required	4498A71	00000
					6"	1"	Orange	Lubricated, Required	4498A81	00000

Tapered Triangular

	Lubrication		Each
Aluminum Oxide—For Steel







	100 Grit (For Smooth Finish)

	4"	1/4" to 1/2"	Gray	Lubricated, Required	4507A53	000000




			240 Grit (For Extra-Smooth Finish)

			4"	1/4" to 1/2"	Brown	Lubricated, Required	4507A52	00000




					320 Grit (For Extra-Smooth Finish)

					4"	1/4" to 1/2"	Orange	Lubricated, Required	4507A51	00000

Polishing Stones for Steel

Just the right hardness level for polishing steel tools, molds, and dies. These stones also double as a good choice for general polishing. Choose the stone shape that best matches the contour of your work surface. These stones can be used by hand or in a power tool with a holder (both sold separately). To keep debris from building up, apply a water-soluble or oil-based lubricant during use.

Straight Triangular

Silicon Carbide Abrasive—Silicon carbide stones, also known as Crystolon stones, are extremely sharp. These stones remove material more quickly than aluminum oxide stones. They are best for the early polishing stage when you want to clear away more material from your work surface. However, they give you less control over material removal than aluminum oxide stones, so stopping at an exact point is more difficult to do.

	Lubrication		Each
Aluminum Oxide—For Steel







	100 Grit (For Smooth Finish)

	6"	1/4"	Gray	Required	47465A281	00000


	6"	3/8"	Gray	Required	47465A282	0000




			220 Grit (For Smooth Finish)

			6"	1/4"	Gray	Required	47465A286	0000


			6"	3/8"	Gray	Required	47465A287	0000




					320 Grit (For Extra-Smooth Finish)

					6"	1/4"	Gray	Required	47465A292	0000


					6"	3/8"	Gray	Required	47465A293	0000


					Silicon Carbide—For Steel







									150 Grit (For Smooth Finish)

									4"	1/4"	Gray	Required	4346A12	00000


									4"	3/8"	Gray	Required	4346A14	00000
									4"	1/2"	Gray	Required	4346A16	00000




											280 Grit (For Extra-Smooth Finish)

											4"	1/4"	Black	Required	4346A11	00000


											4"	3/8"	Black	Required	4346A13	00000
											4"	1/2"	Black	Required	4346A15	00000

Uniform-Finish Polishing Stones

Prevent uneven polishing marks. Unlike other polishing stones, these stones never leave your work surface for a uniform finish. You move them around with a lapping rod (sold separately), which you can lift off to pause your work—instead of removing the stone. Choose the stone shape that best matches the contour of your work surface.

Lubricate your work surface with either a water-soluble or oil-based lubricant. To make sure the lapping rod doesn’t slip off of the polishing stone as you work, create a small indentation in the stone with a diamond grinding bit. For best results, install the lapping rod in a reciprocating polisher.

Straight Triangular


	Required Lapping Rods

Aluminum Oxide Abrasive—Aluminum oxide stones, also known as India stones, scrape away material slowly to give you more control over how much material you remove. They are good for the final stage of polishing.

	Stones									Required Lapping Rods
	Grit	For Finish	Lg.	Wd.	Color	Lubrication	Pkg. Qty.		Pkg.		Each
Aluminum Oxide—For Aluminum and Steel



		400	Extra Smooth	1/2"	1/2"	Beige	Required	10	8380N112	00000	8380N124	000000


		600	Polished	1/2"	1/2"	Beige	Required	10	8380N113	0000	8380N124	00000
		1000	Polished	1/2"	1/2"	Beige	Required	10	8380N114	0000	8380N124	00000


		Silicon Carbide—For Aluminum and Steel



				400	Extra Smooth	1/2"	1/2"	Green	Required	10	8380N118	0000	8380N124	00000


				600	Polished	1/2"	1/2"	Green	Required	10	8380N119	0000	8380N124	00000
				800	Polished	1/2"	1/2"	Green	Required	10	8380N121	0000	8380N124	00000