Coaster Holder for my 100mm coasters

This coaster holder will hold any 100mm diameter coaster. You will just have to adjust the height depending on how thick you make your coasters and how thick the cork backing is if you apply one on the back of your coasters. 
 

(To get you in the ball park, I try to make all of my coasters 3mm thick and I add a 1mm cork backing (1mm is what the listing on Amazon saids), I set the height of the holder between 20.4mm to 21mm usually.)
 

 

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