OTEC walnut shell media is used for mirror-finish polishing of non-ferrous metals, jewelry, titanium and steel alloys. It can be used with all types of dry polishing equipment.

This walnut shell granulate (media) by OTEC is treated with a polishing paste so no additional paste is required until the 3rd or 4th use.  Then refresh with OTEC polishing paste 147.697.

The H1/400 media has walnut shell that is sized at 0.4 to 0.8mm, which is considered a fine grain.  It is used as the second or final step for dry polishing. Cycle times with a high speed OTEC disc finisher is about 2 hours. If used with standard vibratory tumblers you will have a longer cycle time. Maximum weight of an item being polished is 7-8 grams.

Click here for Media Use Tips

If finishing multiple items using the OTEC dry disc finisher it is important to suspend jewelry items in the media with the OTEC Drag finishing attachment top to avoid dents and scratches caused by pieces striking one another.

OTEC Walnut Shell Media H1/400 Impregnated with Polishing Paste-Grain Size 0.4 to 0.8mm-1 Lb Pack