[chbot] Suitable Epoxy

[Mark Atherton]

sounds like you need a rigid substrate.

---------

how about building the gubbins dead-bug-style on a piece of bare PCB 
fibreglass, and tacking in place with standard epoxy.

attach cable sheath to PCB with cable ties

add a coating of RTV letting it fully cure

add heatshrink

---------

so rigid assembly, mechanical decoupling of  the wires, waterproof 
RTV and heatshrink mechanical protection

if you pull on the cable, the force is then transferred to the 
assembly substrate, not the wiring.

-mark



At 12:35 p.m. 20/10/2014, Jasper Mackenzie wrote:

> > I am honoured with the effort you have put in to this.
> > Also, possibly the best back-handed compliment for quite a while :)
>All is fair when the swords are out.
>
> > Are you sure the water is at 100c ? Our tank only goes up to about 65 ...
>Yes, I would go so far as to say that due to pressure the 
>temperature sometimes exceeds 100. It is a solar hot water system, 
>and in summer it can be a rapid boil!
>
> > Have you tried RTV, letting the potted area fully cure before 
> applying heatshrink ?
>Yes and no. I don't want to do this due to the lack of mechanical 
>strength. The ic's are not on a board and i have ripped the legs off 
>them far to many times, so want something rigid.
>Not a bad fallback tho. Usually applied the heat shrink before it is cured...
>
>As for shoe goo, Max temp is 66 deg C
>
> >
> > Hope to see you this eve.
>Small people this week 8), so no 8(
>
>Hopefully by next time I will be able to scare you all with my car charger 8)
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