My daughters found my old skateboard and were playing around with it the other day. I noticed that the plate that protects the back of it for breaking was worn through.
![](https://global.discourse-cdn.com/glowforge/optimized/2X/5/5000828fbd0ce09783098bb60d937418bfc69e5f_2_690x388.jpg)
I decided this was an excellent chance to try 1/4' acetal. I scanned in the existing part and traced the outline in Illustrator and placed 3 1/8' holes in the same locations as the old one. I was able to cut through the 1/4' acetal with no issues, it worked great.
![](https://global.discourse-cdn.com/glowforge/optimized/2X/3/3ad3e5677133dea3162b3b82add040e49f3b6a57_2_690x388.jpg)
It was a bit of a tight fit for the screws, but not too bad. However, the thickness and length of the screws wasn’t quite right.
![](https://global.discourse-cdn.com/glowforge/optimized/2X/8/80088b4d3a6b362a5ce89f5be4a985022f0308b2_2_690x388.jpg)
I decided to modify the piece a bit to make it fit better. I measured the screw heads and then created a new cut/etch file that would give me 0.13' holes and 0.3' etched recesses around those holes. It was a simple shape of two circles and one filled.
![](https://global.discourse-cdn.com/glowforge/original/2X/1/1fb0e36968897563703c2c882fd754bdb89d768c.png)
I was able to copy and paste it 3 times and zoomed into the piece on the bed to align them which worked well.
![](https://global.discourse-cdn.com/glowforge/optimized/2X/e/e56a685c7a98e255bbde2270e71d4d652e576404_2_690x388.jpg)
I used 3 passes in the end which gave me a nice deep recess that the screw heads could countersink into and reach further through the board to the t-nuts on the other side to actually fasten it.
![](https://global.discourse-cdn.com/glowforge/optimized/2X/e/e9c518621d74a5e501f150cdd0c39b5ef247bc2d_2_690x388.jpg)
After that I was able to attach it in place of the old one and the kids are ready to go out and shred again
![:slight_smile: :slight_smile:](https://sjc3.discourse-cdn.com/business5/images/emoji/twitter/slight_smile.png?v=9)
![](https://global.discourse-cdn.com/glowforge/optimized/2X/3/3a336bcc11832ead8eeeba1af5870e0dfdfc2237_2_690x388.jpg)
(I still need a replacement for one of the screws from the original set that was sheared off)