KISS!
Assuming you are only doing these on a low production level basis,
(homebuilt!) and price is paramount, why don't you sit and watch a
thermometer and switch on and off the heater?
This has the advantage of being cheap, but is labour intensive. If you need
to use your hands for other things while the heating cycle is operating,
then even buying a few beers for a qualified mate to watch the dial and turn
on the heater could still be much cheaper. (As long as the beers are
supplied after a successful run!)
Hope this helps,
Peter
wrote in message
oups.com...
I'm into recumbents and am exploring building a mold for a prepreg
carbon setup. This looks like an active site for composites.
Can anyone recommend a heater control to adjust the heating/cooling
ramp rate (5 degrees a minute, etc)? I'm obviously trying to keep
costs down so something surplus or homemade would be best.
Also, if I do a pressure bladder inside a female mold how do I apply
the vacuum between the composite and the inner mold line (so that the
bladder inflates)? Or should I just only apply pressure to the bladder
and not try to pull a vacuum on the mold?
Thanks airplane guys.
Joe
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