SH Long Hard Fettling Knife #247C obsidian *Disclaimer: All tests were done

*Disclaimer: All tests were done using Permalac Original Satin finish

It has an ideal viscosity which allows it to penetrate porous surfaces yet is viscous enough to bridge gaps when gluing broken objects

It reaches an initial cure in 3 to 4 hrs and a workable cure in 7-10 hours

and annealing

SH Long Hard Fettling Knife #247C obsidian *Disclaimer: All tests were doneAs the name insinuates size matters. This is a longer stiffer version of the other knives out there. It is frequently used to trim pour holes, remove mold marks, carve and sculpt ceramics and greenware as well as work with plastilinas! The 247C has a hard tempered steel blade 6 long and firmly set in a hardwood handle for a total length of 10.