Iain, I have been using a related technique for both wood routing and CNC milling recently. Clean the syrfaces, carefully apply a layer of the high quality blue Scotch masking tape to each, making sure there are no overlaps or gaps. Smooth down the tape and get rid of any air bubbles. Then apply dots of superglue to one surface and carefully apply the other on top of it, pressing together until they bond. Once the job is done, with a bit of care you can lever off the cut part with a knife blade inserted between one surface and the tape.

Now for another suggestion. When I did this recently after I applied the glue I put down the workpiece the wrong way up, so it was glued firmly to the tape! I prised it off but the "top" was covered with hardened glue and torn tape. I stuck it down properly the other way up to do the job but was then faced with removing the mess. So I dropped in into a stainless steel pan, just covered with water, and boiled for a couple of minutes. The glue just slid off leaving a clean surface behind.

This suggests that 100 C should be plenty hot enough.

Edited By John Haine on 26/01/2020 20:21:17

Carry out a simple series of tests to find out (starting at a low temperature, of course)?

Sometimes freezing can remove super glues as well. Tap it with a piece of wood and hammer while still frozen.

It just takes longer unless you have dry ice handy.

Neil

Edited By Neil Lickfold on 28/01/2020 08:57:44

Now I use heat. Specifically the oven, but I suspect I'm overdoing it. I've been running the oven at 200+ centigrade which certainly does the trick, but it stinks (and SWMBO isn't keen).

Your series of tests (but sadly only 2?) clearly demonstrated the futility of soaking at 200 degrees Celsius?

I doubt that anything metallic will need soaking at temperature for an hour to raise i temperature by 30 degrees, as most metals are good conductors of heat and the size is not excessive.

Somewhere between 110 and 140 would seem to be adequate. It worked, presumably no stink – so what is the problem?

KISS principle; if it works, use it; if it ain’t broke why fix it?

They all come to mind.

Hi Guys,

I've used various methods for sticking items to a wax chuck ! Super glue works well as does double sided tape. I've never had any problem removing parts. A sharp wood chisel works well and easily removes any glue or tape residue.

Soft parts like fibre ones, you do have to take a lot more care over removing. It you aren't very careful you can split the material. One dodge that I use with those is to stick a paper backing on first then the part. Hot water will soak off the paper.

My local B&Q stocks the blue Scotch tape – that's where I got it from.

**LINK**