Temporary loctite for drilling

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I have read (somewhere.???) that you can bond 2 or more metal parts together with loctite. Drill the holes and once done you can separate them with the use of heat.

I ask this to assist the drilling of the valve chest and cover for the Stuart engine I am building.

Is this fact or myth. Has anyone done this and is it a particular loctite grade that is used.?

Cheers, Nick

Nick,

Be aware that "Loctite" is a brand-name ... it used to be generally presumed to mean the anaerobics [of which there are many grades], but is now also used for their cyanoacrylate "SuperGlue" products.

The anaerobics are excellent for cylindrical fits, but their adhesive effect is actually quite poor, so they are not very suitable for bonding flat surfaces.

You can however, bond your parts together with cyanoacrylate, and then disbond later by soaking the assembly in water.

MichaelG.

Hi Nick

Yes, it works - I often use super glue to hold things together for drilling, light milling etc.

The bond is easily broken afterwards by heat (250 degs) or sometimes a sharp hammer blow.

You will have to clean the adhesive off afterwards though.

Cheers Will

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You're right, of course, Will

... Best choice of removal technique really depends upon the nature of the workpieces.

[Nick]: I should also have mentioned that this technique is a variant of the Watchmaker's "Wax Chuck", where Shellac is traditionally used as the adhesive.

MichaelG.

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Edit: See here for a good note about using Shellac on larger work.

Edited By Michael Gilligan on 13/12/2014 07:47:13

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Cheers guy's.

Nick

Hi Nick

Industrial super glue is what I always use or soft solder paint, Loctite does not work as said on flat surfaces

Stan