Degussit Ruby Bench Stone 4" x 1" x 3/8" Loose Castaldo 1 × German machinist square

1 × German machinist square

Missing sizes are not being back-ordered due to unpredictable restocking timelines

Selection of needle files and escapement files for refining metalwork

Sp 5 – Rectangle Planisher

or adapt your own files and felt points

Degussit Ruby Bench Stone 4" x 1" x 3/8" Loose Castaldo 1 × German machinist squareMade in Germany from pure sintered crystals of synthetic ruby, Degussit Ruby Bench Stones are exceptionally hard abrasives that maintain their shape and resist wear through extended use. Their extreme hardness makes them capable of sharpening and finishing the most demanding materialsincluding carbide gravers, glass, porcelain, and quartzin addition to conventional metals. Both sides of each stone are finished, and the stones may be used dry or with