I'm building my own vacuum chucks out of PVC/ABS unions on 2" MDF backing plates with CA-reinforced, threads. So far I've made a 5", a 4" and a 2.5".
I just can't figure out what to use for the "gasket" material. I bought several types of weather stripping but none of them can make the curves, especially on the smaller chucks.
Here you can see where I tried to take one around the perimeter of the 5" and it just came off after the afternoon. On the 2.5" nothing could make the bend so I tried a "segmented" approach but it too didn't stick.
Can anyone point me to a good set of instructions? Or give ideas on good material to use?
Thanks in advance.
Below are a couple of pictures of the back for reference. You can see I thoroughly soaked everything important with thin CA.