PDA

View Full Version : Drawknife handle



Cgcc
11th November 2021, 10:08 PM
Dear all,

A little project on my radar is re-handling an old drawknife I have. In a recent project, I had to hog off a lot of waste in a curve - each side of 8 legs. The drawknife was wonderful for getting through 80% of the waste. It is functional and sharp, but the handles are atrocious. As it, it has a rusted, riveted/washer style end holding the handles on.

I have watched a few videos and it seems most people simply grind off the washer/river, make their new handles, then epoxy the tang into the new handles, instead of having any kind of riveted or mechanically seated solution.

I am a little leery because none of the videos seem to really discuss durability and seem a little "for show".

My question is - does anyone have experience (either directly or comparable) in terms of whether your standard epoxy will last, and stand up to the tough pulling forces that a draw knife that is really put to work will go through?

Part of the reason I ask is that I personally dislike using epoxy to seat handles - when I can I prefer to ream a really tight fit. However the action of a drawknife it seems will almost inevitably pull out any tang with a mere friction/compression fit.

Tung tied
12th November 2021, 10:12 AM
Most tang knife handles these days are held on with epoxy, even ones that use rivets. I'd use something other than the 5 minute stuff from the green shed. I use West System G/Flex epoxy. It's one of the most widely used. Your tangs should have some keys ground in and roughened to help with the bond and as you've said, a tight fit into the handle.

I make the odd knife handle and stabilise them first in cactus juice resin and a vacuum chamber to guard against moisture / humidity / sweat / oils movement effects. I can stabilise some for you if you want to post them down. It's not a quick process and if you're using hard wood, it'll take about 3-4 weeks. PM me if you want to give it a crack.

Cheers

Bryan

Cgcc
13th November 2021, 08:48 AM
Thanks Bryan

When you say "knife" do you mean drawknife?

My concern was really just that wrenching force you get when you've drawknifing stuff for stock removal - if you hit knots and whatnot - it is like a little hammerblow applying pull-force in the direction of pulling the tang out of the handle. And can also have levering force when skewed. (I'm up to speed on notching the tang.)

Many thanks for offer - I think I'll be fine at least for a prototype but much appreciated.

BobL
13th November 2021, 10:19 AM
This is a drawknife I made in 2007?
The handles are still tight.

It's made from a de tempered file, mild steel tangs and jarrah handles.
The ferrules are bras plumbing fittings
503800
503801

The handles are just epoxied on with West Systems epoxy.

The important thing with handle timber is that it not be too dry before gluing because any subsequent expansion may see it detach, usually between any steel part of teh handle and the epoxy.
I've had this happened on a turning chisel handle and suspect that it came from timber stored under the house for decades where things are super dry.
Scrupulous cleaning of metal surfaces is important before gluing.
Nothing teh tangs is a good idea but didn't do that on mine.