Rock Polishing Tools

MJR Tumblers

MJR 36-grade extra-coarse silicon carbide

36-grade silicon carbide for a recipe requiring the coarsest documented cut.

MJR pouch reads extra coarse Step 1, 36 grit.
$15.99Nov 9, 26, 04:19 PM · New York
Price info

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Use and fit

Choose the 36-grade refill only where the shaping instructions call for it. It gives a different starting point from MJR’s standard 60/90 recipe. Once the shape is right, use the subsequent grades and clean the barrel between them.

Specifications

Brand
MJR Tumblers
Listed model
MJR1p36
Verified detail
36-grade silicon carbide for a recipe requiring the coarsest documented cut.

Product or manufacturer reference

Questions before buying

Should I use it for the normal first stage?

Match the grade specified for your stones and machine. The 36 grade is the extra-coarse option, while MJR’s standard sequence starts with 60/90.

Compare before you buy

Choose 60/90 when the standard coarse cut is the one in your recipe. MJR 60/90 silicon carbide coarse grit

Choose rock tumbling grit by stage

Rock tumbling grit by grade