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2. Tack-weld the patch in place in a few dif-
ferent positions:
3. PLA is workable at lower temperatures
than ABS, so use a gentle touch to melt
and weld the two parts. Too much pres-
sure can create a puncture. It takes a bit
of practice:
Figure 13-13.
Industrial Ring Habitat, by Micah
Ganske
PLA is prone to cracking and splitting, and
it's typically difficult to repair. Solvents such
as acetone have little effect. ABS glue and
super glue merely cement the parts by sur-
face tension, rather than offering a chemical
weld—meaning that the seam can easily be
rebroken.
With friction welding, you can form solid
joints that are difficult to break.
1. Press the patch or broken part into place
and hold it securely:
