Keeping slipjoint liners flat

tito

tito

Joined
May 30, 2006
Messages
670
I've been having a problem keeping slipjoint liners flat after peening the scales on. I noticed it from the beginning of making these, but figured I'd get better after making more. That's not happening. I've made 25 or so, and just ruined one trying to straighten it out. Again. In fact I've never wasted so much time and material as jacking around with these chincy stupid old time non-technical pieces of crap. Am I simply hitting too hard? I have to be, they are dead flat beforehand. Can someone confirm or offer advice? Thanks, sorry for the rant.
 
Post a pic or two. I bet we can figure it out. If you, for example, are peening a piece in between two bolsters, having it fit too tight between them will cause the liners to warp.
 
410ss liner material. It's easy to bend. Pins are 440c. I milled the ricasso relief prior to soldering bolsters, .005" depth. After peening the handle scale on, I could see the liner had a slight bend, verified on a surface block. I put the liner back on a disc sander to get everything flat again, but there's just a lot of warp. Ended up grinding most of the relief away.

My knifemaker subscription is past due, ill post a pic of it when I can...
 
Once you put the natural scales on I keep them clamped down to a flat surface whenever I am not working on them.

Even then they can warp. When you go to hammer the knife together clamp them flat and peen your pins.

BTW never ever ever try to grind out the warp....EVER from the liners.
 
Yep...I think that was it. I thought I was already tapping gently, but started over and went about 1/2 again lighter hammer blows. Turned out way better. Thanks for all the comments and help.
 
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