Amazon BFB-3000 User Manual download pdf (Page 56)

sales@bitsfrombytes.com +44 (0)1275 873792 Document No D100246

BFB 3000 Operations manual

Fine tuning your print

Print speed less than Extrusion rate

This is used to good effect on the base layer of the raft, more material is pumped out thickening the filament. As

above if you wish to maintain dimensional accuracy in the main body of the print you must make allowance for it

in Skeinforge, set the layer thickness to a higher value in direct proportion.

Warping

Running 16mm/s at 40rpm with ABS is good for small objects but starts to cause problems the

larger the object gets. By the time any dimension is > 50mm warping can be a significant effect

depending on the actual design, long straight sections being the worst. Warping can be

reduced if the print speed is reduced. Try 8mm/sec at 20rpm, this has produced objects >

100mm long with minimal warping, the obvious down side is the build time is doubled. Another

option is to warm the print table or blow hot air round the print, both methods have been used

to good effect.

Warping is at its most extreme with HDPE & PP better with ABS and at its least with PLA

Removal of the object

The easiest way is to slide a flat blade under the raft and work all the way round, chances are the

object will pop off before you are finished. Alternatively if the object remains stubbornly fixed to the

table (probably Z set to low). Push the blade as far as you can under one edge, then get a flat

bladed screwdriver and use it to help leaver off the part.

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Amazon BFB-3000 User Manual Page 56