how do you make a knife out of a hacksaw blade?

[Dicky]

Thanks Thomp

[Nomad]

When you cut metal like that, you might consider using Uniweld Cool Blue heat sink paste. Less likely to overheat the blade when you are cutting.

[Nomad]

I just checked my old hacksaw blade knife and the steel is thinner than I remembered it. You could get a lot of carving blades out of one power hacksaw blade.

[Thomp]

Your Welcome Dicky,

yep, them little red abrasive disks that come with dremel kits are dangerous they break to easy and become shrapnel looking for an eyeball.
i think their for working with marshmallows or something.

but occasionally they put in one fiber disk in a package, its a little thicker but it gets the job done,

i found my stockpile at harbor freight... bout 3 bucks for 3 of them with an arbor..
Their made of abrasive/fiberglass material like a weld cutting side grinder blade,
to keep heat at a minimum i cut the small amount of metal on a flooded wet sponge in a big jar lid. yep its tough to keep from getting sprayed... but you dont loose steel,

[Dicky]

Thomp, were sorta goin' down the same road re:cooling. I use a margarine tub full of water with a rag in it and bring the tub to the steel and touch the work with the wet rag every couple of passes. I also use the discs that come in a kit with the arbor.

[Hi_Ho_Sliver]

I cut an extremely hard piece of steel with my abrasive cut off saw....but I just touch the wheel to the metal, then cool with water and repeat until cut, takes a long time, but I haven't hurt the temper yet.

[Ron T]

When I'm making a straight razor knife, I take the slow way and continually dunk the blade in water. On other steels, nails, hacksaw blades, etc., I usually heat them to soften the metal, grind them, then re-harden and re-temper. I find it easier to shape and work the softened steel.

I'm not good enough to try to do that to the razor knife though.

[Dicky]

I just finished sharpening the upswept blade I made from an old power hacksaw blade and I can't believe the edge on it. I have had good success making mini turning tools and knife blades with concrete nails in the past. This hacksaw blade takes an edge as good or better than Warren or Pfeil blades do and they take a "scary" one. Now to find a maple burl for a handle.

[redhand rik]

cooling your cutting

i have an old iv bag from when i went to the hospital. i fill it with water and hang it over a 5 gal bucket. there is a "flow adjustment wheel" that will adjust from no flow to full flow and everything in between. the tube is held by a piece of wire wrapped around it so it can be positioned. i use this for carving stone and cutting metal.