Question: best way for connecting stand-offs

[sharkfin61]

Watching RomeoKilo's video about his ARC-210 panel implementation yesterday, I wondered how the mainboard stand-offs where put in place and fixed to the panel layer.

Is it necessary to drill a hole and tap a thread into it or will glueing (CA or Epoxy) them into the hole be enough when you screw the pcb's or next layers onto it?

 

As I have to work with pre-fabricated panels from pcflights . com , I only have one try. 

 

 

Thanks for your inputs.

Edited January 21, 2021 by sharkfin61
typo

[agrasyuk]

don't glue anything, it has to be removable. Drill and either use a nut or tap a thread. the 2.5mm acrylic sheet can reliably hold a bolt.  I usually do M3 unless specific task requires smaller. 

 

or you can use pins and headers to sandwich a device together , it holds reliably if you place them strategically. below is a sandwich of 3 boards not counting the PI

Edited January 20, 2021 by agrasyuk

[sharkfin61]

Thanks for the answer. I made a first drill hole in 2,5mm Plexi (Acrylic). I screwed in the stand-off without taping a thread (M3 stand-off into a 2,4mm hole).

Fitted tightly and sturdy. 

I didn't think it was so easy. Well, the learning curve in pitbuilding is still as steep as the A-10C II type related training.

[agrasyuk]

if you didn't tap then the only way you could have got the screw part of that standoff in is by deforming the threads. Nylon has enough elasticity so it probably will hold but for how long? plus I don't think it's good idea to stress the acrylic. why not just tap the sheet ? 

[sharkfin61]

The stand-off I used, was a brass stand-off. I think it cut it's own thread into the acrylic. I used the nylon stand-offs in my CDU project, I know about their weakness when it comes to threads. But thank you for the headsup.
Oh, yes, the other problem was, I didn't have a taper for the M3 screw. Only m5, m6, that I bought for the woodwork.


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