Anycubic i3 Mega hot swappable round Ultrabase holder

thingiverse

Finally getting my Anycubic i3 Mega (version 3), I was surprised by how much less adhesion I got with the stock Ultrabase compared to the round one I once bought from Amazon. The surface of the round version looked and felt more coarse. I then decided to get rid of the warping by removing the Ultrabase from the heatbed. I heated it up to 80 degrees and used the included scraper to separate them. It took only five minutes without any glue residue on the heat bed, so this worked like a charm. Later, I removed all the glue from the Ultrabase using lighter fuel and re-attached the Ultrabase using paper clips. Sadly, I still had warping although it was less. By now, I created this thing: simply get two 200mm round Ultrabases off of eBay. One item costs nine euros or ten dollars at the moment. You will then be able to lift off one Ultrabase after a print using the maintenance holes built into the holders and immediately start the next print with your second Ultrabase. You need four x Ultrabase holders and eleven x paper clips. Heat your print bed up to 80 degrees or more with the Ultrabase holders attached, wait some time, and then re-adjust them. Please also use three additional paper clips to further hold the Ultrabase in place. More heat-resistant material works better, but PLA is fine. I had some layer shifting with my first print, but since I readjusted and pressed them against the Ultrabase while hot, it works perfectly as you see in the latest picture I added. It's just great! It is a 23-hour print, running for more than 12 hours now, and no shifts at all. Update: It sits tight, but printing at 60mm/s leads to layer shifts. I guess the best solution still is simply holding down the Ultrabase with three paper clips.