I've been playing with my SD3 for a couple of months and learned through trial and error in combination with information from subscribers on this site how to control the adhesion of the first layer of plastic to the print table. Ther may be better solution out there but I have found what works best for me:
Clamp a 1/8" Borocilicate glass plate to the table to overcome the table warpage - McMaster #8476k18 $24.62 . This will allow the extruder to table clearance to be consistent in all x-y positions.
Enclose the printer with a box. I used 3/16" Acrylic sheets 14 x 14. This retains the heat and at a more constant temperature.
Allow the table temperature to stabilize for at least 10 minutes at 105C
Suave Hair Spray- Max hold. Spay on hot table and start printing within 30 seconds. ANy longer and the hair spray will dry out.
I'm open to other ideas that work better, but if you're still having problems this is worth trying.
Peter
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