Not removable, but doesn't completely matter.  The PCB has through-hole=20
terminal blocks on it, and the end user should be able to mount on a car=20
(frame, underdash, etc).  In the past I machined HDPE bases with=20
recesses where the pins came through, but I don't have access to my CNC=20
mill now, so looking for a simpler option. Those were 1/4" thick so I=20
could use small #2x1/4" screws to hold the PCB to the base.

Now, I'm thinking I can 3D-print bases instead and I'd like to keep it=20
thin (~0.125" would be nice) so it would print faster.  Also, I don't=20
think 3D printed ABS will hold up to small screw threads well.  Hence=20
glue.  There are a couple larger holes for #8 sheet-metal screws=20
(through both the PCB and plastic) that the end user can use to secure=20
to the car, but they can double-sided tape to the car instead.  I need=20
it to hold up to that.

I've also considered laser-cut adhesive-backed rubber or rubber-foam,=20
but that would have to be 2 layers so I could have recesses.

3D printed would be the simplest as long as I have a decent adhesive for it=
..

I generally like epoxy, but find it works best when there is some=20
"mechanical grip" -- ie: being able to wrap around sections of both=20
parts .  Super glue would come off easily with any flexing. Dwayne's=20
suggestion of contact cement may work well, but I'm concerned about it=20
spreading outside of the edges.  I'll have to experiment with that.

Cheers,
-Neil.






On 1/28/2015 10:07 PM, Robert Dvoracek wrote:
> Does it have to be removable?
> For a permanent bond, nothing beats a few well-placed holes and 2-part ep=
oxy or JB Weld.
>
> Cheers,
> Robert
>   		 	   	=09

--=20
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