Plastic Hollow Mandrels
Plastic Hollow Mandrels
(OP)
I am in need of some (hollow if possible) plastic X (4 legged) mandrels 0.187" OD, ID is not critical as long as the mandrel is rigid. Length of each leg around 2" or so.
Material: Poly Pro or Kynar
Does any one know if these can be purchased off the shelf from anywhere or would I be looking at creating a mold to manufacture them ?
Material: Poly Pro or Kynar
Does any one know if these can be purchased off the shelf from anywhere or would I be looking at creating a mold to manufacture them ?






RE: Plastic Hollow Mandrels
FEP Tubing $1.07 per foot:
htt
Clever, Google - is it not?
H
www.tynevalleyplastics.co.uk
RE: Plastic Hollow Mandrels
I need a 4 leg cross, not just a length of tube
RE: Plastic Hollow Mandrels
AAhhh...Understand now.
For a guess - you'll be very lucky. What's it for? Your material choice of PP and PVDF are poles apart in cost.
How many do you require?
H
www.tynevalleyplastics.co.uk
RE: Plastic Hollow Mandrels
Regards
Pat
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RE: Plastic Hollow Mandrels
Unfortunately I can't say too much but we needed them to act as formers for an overmolding process
RE: Plastic Hollow Mandrels
Regards
Pat
See FAQ731-376: Eng-Tips.com Forum Policies for tips on use of eng-tips by professional engineers &
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for site rules
RE: Plastic Hollow Mandrels
Buy very thin wall PFA tubing. Run a snug-to-tight fitting copper or steel wire thru the i.d. Overmold/overwrap and subject to heat cure. Pull out wire, and pass ice water or similar coolant thru tube i.d., then pull tube.
This worked for use because we had enough residual heat in the outer part, and the conductivity of the PFA is low (the i.d. of the pfa shrank and pulled in enough to let us yank it out). And, maybe because the PFA had lovely release properties (I think it gets a silicone coating when extruded/drawn?).