MakerGear Forum

All,

Well, I'm making some shelf stackers for the kitchen. Dead simple to design -- a couple cubes and a cylinder unioned together in OpenSCAD. But this will be the biggest part I've ever printed, at least as far as contact area with the bed:
I did a smaller block with 20% infill and full fan, and it pulled up in the corners big-time. I did a second block with 10% infill and one perimeter and no fan and it came out great. Using MakerGear black PLA @ 223C / 70C bed. The room is closed off from the house most of the time and the furnace vent closed, so it's about 50 F (10 C) in there. Using a thick coat of Aqua Net for the bed prep.

When I have all three stackers made and in place, I'll snap some photos for the Showcase board.

A late Christmas present for my better half....
Dale

Cool the bed! PLA will warp slightly (maybe 1" corner, about 1/4") above 65C! I did a 3lb print that size that did this...

This one took up most of the bed, I used 3 layers of glue stick. Didn't warp on me. Did run out of filament on the first try though.

http://www.thingiverse.com/thing:438191

Agreed on the bed temperature. Honestly if you're printing on blue painters tape, you probably don't need the bed turned on at all. I have mine set at 50C with blue tape just to be sure (I seem to enjoy printing things with lots of delicate little edges, i.e. gears and such). I recently printed a set of transparent thin diffusers using MG translucent blue PLA and had no issues at 225C/50C nozzle/bed temp on straight glass.

If you *really* need it to stick, go with some glue stick on straight glass, but I have tried glue stick in the past and had issues getting the parts to come OFF then. The one part forced me into sticking the glass bed + part in the freezer, and then going after it with a very thin putty knife. For something with this much surface area, you really shouldn't need it.