14 Feb
2014
14 Feb
'14
9:41 a.m.
On Thu, 13 Feb 2014, Chuck Guzis wrote:
To be fair, there are special screws for
thermoplastics. They've got deeper
threads and generally a 30 degree or so flank angle. The trick when forming
bosses for them is to slightly relieve the top of the screw hole to allow
space for the burr that always develops. A properly-installed screw should
last for decades.
Do you know what the "official" name for those are? I'd like to get
some
ordered...
The alternative is to incorporate a brass threaded
insert into the boss,
which I'm not wild about.
I often use brass heat-set inserts in the 3D parts I print and they work
very, very well.
g.
--
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