thingiverse
I was having an issue with uneven/uncontrolled cooling making larger prints split on my makerbot. So I made 4 little stands that hold a cardboard screen in place around the build platform. Works a treat.
Instructions
Print out the stands.
Find 3mm cardboard (the box that my makerbot came in worked fine for me) and cut it to size (74cm x 18cm was what I used)
Fold the cardboard 25cm from each end and put the corner stands on.
Put the end stands on, put it in your makerbot, around the build platform and print those big prints worry free!
I take it out for smaller prints and to clean the build platter.
Direct link to the original creator's page
Click the "View on thingiverse" button above to visit the original model page on thingiverse. You can download the STL file directly from the creator's page for free.
This STL file is compatible with most FDM 3D printers (Creality Ender 3, Prusa MK3S+, Bambu Lab, etc.) and resin printers (Elegoo, Anycubic). Check the original page for recommended print settings and materials.
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Most STL files can be modified using free software like Blender, TinkerCAD, or Meshmixer. Check the license on the original thingiverse page to see if modifications are permitted by the creator.