Having trouble lowering a gantry corner? Protip: Use heat tape
If you're building a 500 and are dealing with one of the gantry corners not being low enough, but can't move it lower because it's blocked by an electronics panel extrusion, then use heat tape!
Simply place a little bit o heat tape (it'll add ~.4 mm) under the magnetic plate, and voila. The heat tape does a good job transferring heat, and it will raise your bed so you do not need to lower your gantry.
This helped me achieve <.25mm range on my 500.
HEre's some heat tape I like to use: https://www.amazon.com/gp/product/B08NY4914D/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
another pro tip: put it ON the bed with some glue on top to help larger prints stick to the bed and prevent warping.
MYJOR Brand High Temperature Tissue Paper Tape, Used to Protect CPU...
MYJOR Brand High Temperature Tissue Paper Tape, Used to Protect CPU and 3D Printer Work Surface, PCB Circuit Board Professionals (4" x 108ft-1)
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