Reddit reviews uxcell M3x5mm(L)-5mm(OD) Metric Threaded Brass Knurl Round Insert Nuts 100pcs

Nice! I left the middle parts solid and used a cordless drill to make the holes. I figured since I'll never take them apart, they won't become stripped. I've also seen serrated brass nuts pressed/melted in with a soldering iron. It creates a durable threaded hole:

M3x5mm(L)-5mm(OD) Metric Threaded Brass Knurl Round Insert Nuts 100pcs https://www.amazon.com/dp/B00Y20YLKY/ref=cm_sw_r_cp_api_-S2-BbYAV507F

The GPU is simply mounted to the wood with a screw like it would be in a case, there's a little support that I covered with silicone on the back end.

For the motherboard I used these and these.

No problem!

1. 5mm
   
   
2. Yes, M3 for all holes, I used the Parvum modding cubes to build the case structure, and for mounting components I used these nuts inserted into the acrylic by applying heat: https://www.amazon.com/gp/product/B00Y20YLKY/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1 - you can see some tips about how to insert these nuts in the SFF Forum post
   
   
3. It's super sturdy. The only fragile part would maybe be the logo on mine, but in general I think it's perfectly safe to travel with this case.

use threaded inserts instead of trying to thread into the print it's self. I use these: https://www.amazon.com/gp/product/B00Y20YLKY/ref=oh_aui_detailpage_o01_s01?ie=UTF8&psc=1

Just look on Amazon for threaded inserts in what ever size you want. I am using the ones I posted along with nylon screwed so I'm not conducting electricity from what ever I am fastening down. I do have stainless steel ones I use too for parts that need a stronger fastener.

Check out this post from 3Dhubs on threaded inserts: http://www.3dhubs.com/knowledge-base/how-assemble-3d-printed-parts-threaded-fasteners

https://www.amazon.com/dp/B00Y20YLKY/ref=cm_sw_r_cp_apa_i_0EJOCbQ7N3H2A


https://www.amazon.com/dp/B07119HX51/ref=cm_sw_r_cp_apa_i_h3JOCbZWF12W4

A couple things to be aware of...

The brass inserts will get some melted PLA coming up through the bottom of them and this ruins the threads. Make sure the holes are reamed a bit so the insert begins to go in with a friction fit at first for the best results.

The countersunk screws are not as ideal as a panhead screw would have been. I used the flathead ones because that's what I had on hand. I made the custom bottom plates with the countersink because of this (there was trial and error).

The extra thumb buttons are useful, I can't imagine not having them. There is a scenario where I think a 5x7 layout would be better (maybe only on one hand) to provide an extra column of keys, but in hindsight the dual 5x6 layout works for me (I still have 3 unassigned keys!)

I've found them a bit hit and miss, I used them on drawer handles, which may not be the ideal use case. One of 5 has already come loose. I tried to fix by shoving PLA fibres after it and melting a rim around, but no joy.

The surface area of the grip part is very small on the ones I have, and also the lines down the edge run lengthways, where if they have been crossways they'd have been like knurling adding some grip.

I got mine on amazon and ebay. https://www.amazon.co.uk/M3x5mm-Metric-Threaded-Insert-100pcs/dp/B00Y20YLKY/ref=sr_1_6?ie=UTF8&qid=1539132205&sr=8-6&keywords=threaded+inserts

I've started to (where possible) build little enclosures for nuts instead. It's a lot more hassle and less fun.

Any tips on the inserts welcomed (I bought a bloody load of them)

Here are some on Amazon, Prime-eligible. I'll probably get a larger batch too, but these are relatively cheap to play with and they get here fast. :-)