And here is the last one :
Actually it is multi purpose, it can hold any kind of 3.2mm round tip, like an old HSS drill bit for instance.
Here it is mounted with a broken Dremel carbide bit, that I grounded with a diamond wheel.
It should be suitable for engraving the hardest steels.
Sorry my mistakes in english.
to share your tip >>> http://www.homemadetools.net/forum/tool-tips-tricks/ <<<
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