On Thursday 06 August 2015 11:14:15 Dave Cole wrote:

> On 8/6/2015 10:12 AM, Gene Heskett wrote:
> > Question, since the motors can get quite warm, how do you fix a
> > die-cast 1x1x2.5" box to a motor?  Most modern glues tend to come
> > apart at higher temps.
>
> I've used Epoxy to glue die cast boxes to Stepper motors with great
> success.  Drill a hole in the back of the box to cover the hole in the
> motor where the leads exit and glue it on.
> I think I roughed up the surface of the box and the motor with a
> sanding disk.

Not the motors laminations I hope. That, with a sanding disk could lead 
to smearing of the metal and inter-lamination shorts and could cause 
some localized very high heating.  Gently hand sanding with a 320 sponge 
to remove _some_ of the paint might be tolerable though.

> I think I used Devcon brand but  I think that JB Weld 
> would work as well.   The JB Weld has a filler in it that might help
> bridge some gaps.   3M has some interesting epoxy called Scotch Weld
> that also looks promising.
>
> Dave

Devcon is the "Bondo" maker. Lots of "void" filler in that.  What I have 
on hand is several years old, leftover from repairing the bottom of my 
boat. And probably needs to go out with the trash.  But JB Weld sounds 
like a better idea.  I'll see if I can locate some as there's none in 
the toolbox ATM. I don't recall ever seeing the Scotch product locally, 
but haven't looked for it either.

Thanks Dave.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>

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