Bruce Bump
Forum Owner-Moderator
One of my own creations in Knifemaking Tools is a handle broach. This handy little carbide tipped scraper will reach into a 1/4" hole and scrape out a nice rectangle slot for hidden tang knife construction. I know this sounds like an advertisement......well it kinda is an advertisement. Boss wanted 50 of these to re-sell after playing with my prototype I sent him. Please contact Midwest Knifefmakers Supply and not me if you can use one.
Here are some cool action shots of what this tool can do:
Simply drill one 1/4" hole as deep as your tang is long or deeper. All the way through if you're putting a butt cap on anyway.
Insert the scraper and pull out. The angle of the carbide is adjusted to be aggressive enough to remove material easy but comfy with the ergonomically designed handle.
It will cut a slot that is narrow or you can turn it sideways for wider slots.
The carbides are actual carbide saw teeth brazed in place. They wont come off and will stay sharp a good long time. They can be touched up on a diamond stone or replaced some day.
The steel is water-cut 304 stainless and not heat treated. I was able to bend by accidentally prying down but it but it bent back straight. With proper use it wont bend.
The handle material is tough basic black G-10 also water cut. I drilled every hole myself because handles can't be drilled with water jet cutters. It boasts 3 swelled brass handle pins for durability and there is a lanyard hole or for hanging the tool on a nail for storage.
This wood is stabilized spalted maple from Jim Clow's hammer-in. Its tough stuff but no match for this broach. I did however pop a small piece out right at the opening of the slot. I suspect a highly burled piece of wood should be left longer than needed and cut to length after the slot is complete due to some damage from scraping in that area.
Enough rambling, Heres the pics:
Here are some cool action shots of what this tool can do:
Simply drill one 1/4" hole as deep as your tang is long or deeper. All the way through if you're putting a butt cap on anyway.
Insert the scraper and pull out. The angle of the carbide is adjusted to be aggressive enough to remove material easy but comfy with the ergonomically designed handle.
It will cut a slot that is narrow or you can turn it sideways for wider slots.
The carbides are actual carbide saw teeth brazed in place. They wont come off and will stay sharp a good long time. They can be touched up on a diamond stone or replaced some day.
The steel is water-cut 304 stainless and not heat treated. I was able to bend by accidentally prying down but it but it bent back straight. With proper use it wont bend.
The handle material is tough basic black G-10 also water cut. I drilled every hole myself because handles can't be drilled with water jet cutters. It boasts 3 swelled brass handle pins for durability and there is a lanyard hole or for hanging the tool on a nail for storage.
This wood is stabilized spalted maple from Jim Clow's hammer-in. Its tough stuff but no match for this broach. I did however pop a small piece out right at the opening of the slot. I suspect a highly burled piece of wood should be left longer than needed and cut to length after the slot is complete due to some damage from scraping in that area.
Enough rambling, Heres the pics:
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