Laminating Question Responses
John T. Brinkmann
Description
Collection
Title:
Laminating Question Responses
Creator:
John T. Brinkmann
Date:
12/13/2000
Text:
12/13/00
Dear List Members:
I posted this question to the List:
I'm working on a fab project and would like help on laminating over
ambroid or another liquid-to-dry seperator. Because of the unique
situation, I would prefer to not pull a PVA bag over what I am
laminating. What will happen if I laminate using acrylic resin directly
over a plaster section that has been painted with ambroid? Are there
other seperation options besides PVA or ambroid that would work in this
situation? (I am attempting to cover the plaster buildup on the distal
end of a mold - between the mold and an adaptor.)
I’ve summarized the ideas below - the full responses are too lengthy to
send throught the server. I'll send them to any individual who asks.
I ended up pulling a PVA bag over the adapter and the mold, and then
trimming the PVA bag so that it slightly overlapped the adapter. (I
needed to laminate the adapter into the socket.) I sealed the
transition between PVA bag and adapter with sealing resin – I was in too
much of a hurry to wait until the liquid PVA I ordered came in.
I won’t go into great detail about the results, except to say that the
resin leaked in, either at the seam, or proximally through the taped end
of the adapter. I had the opportunity to spend some time in the
character building exercise of chipping and grinding plaster out from
the adapter (far, far at the distal end of a Symes mold). I echo
Mr.Tony Wickman’s assessment: “laminating over bare plaster or even
laquered plaster is not good, ugly things happen, ugly things.”
Ugly indeed.
John T. Brinkmann, B.S., C.P.O.
SUMMARY
1. wrapping electrical tape around the plaster build up, then apply
stick wax (Fillaur sells it) to the exposed surface of the tape. (I was
told by the someone at a fabrication facility that electrical tape will
be dissolved by acrylic resin).
2. Fillauer has pvc Isolation fluid in a spray can (I called, and they
said they don’t)
3. liquid PVA (I ordered it)
4. a balloon covered with vaseline
5. clear tape covered with three layers of a good hand rub car wax
6. use a build up of bees wax instead of plaster
7. parrifin based releases
8. pull a 1/8 sheet co-polyester plastic over the wet plaster
9. the wax that boat builders use as a separator for molds
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OANDP-L is a forum for the discussion of topics
related to Orthotics and Prosthetics.
Public commercial postings are forbidden. Responses to inquiries
should not be sent to the entire oandp-l list.
Dear List Members:
I posted this question to the List:
I'm working on a fab project and would like help on laminating over
ambroid or another liquid-to-dry seperator. Because of the unique
situation, I would prefer to not pull a PVA bag over what I am
laminating. What will happen if I laminate using acrylic resin directly
over a plaster section that has been painted with ambroid? Are there
other seperation options besides PVA or ambroid that would work in this
situation? (I am attempting to cover the plaster buildup on the distal
end of a mold - between the mold and an adaptor.)
I’ve summarized the ideas below - the full responses are too lengthy to
send throught the server. I'll send them to any individual who asks.
I ended up pulling a PVA bag over the adapter and the mold, and then
trimming the PVA bag so that it slightly overlapped the adapter. (I
needed to laminate the adapter into the socket.) I sealed the
transition between PVA bag and adapter with sealing resin – I was in too
much of a hurry to wait until the liquid PVA I ordered came in.
I won’t go into great detail about the results, except to say that the
resin leaked in, either at the seam, or proximally through the taped end
of the adapter. I had the opportunity to spend some time in the
character building exercise of chipping and grinding plaster out from
the adapter (far, far at the distal end of a Symes mold). I echo
Mr.Tony Wickman’s assessment: “laminating over bare plaster or even
laquered plaster is not good, ugly things happen, ugly things.”
Ugly indeed.
John T. Brinkmann, B.S., C.P.O.
SUMMARY
1. wrapping electrical tape around the plaster build up, then apply
stick wax (Fillaur sells it) to the exposed surface of the tape. (I was
told by the someone at a fabrication facility that electrical tape will
be dissolved by acrylic resin).
2. Fillauer has pvc Isolation fluid in a spray can (I called, and they
said they don’t)
3. liquid PVA (I ordered it)
4. a balloon covered with vaseline
5. clear tape covered with three layers of a good hand rub car wax
6. use a build up of bees wax instead of plaster
7. parrifin based releases
8. pull a 1/8 sheet co-polyester plastic over the wet plaster
9. the wax that boat builders use as a separator for molds
********************
To unsubscribe, send a message to: <Email Address Redacted> with
the words UNSUB OANDP-L in the body of the
message.
If you have a problem unsubscribing,or have other
questions, send e-mail to the moderator
Paul E. Prusakowski,CPO at <Email Address Redacted>
OANDP-L is a forum for the discussion of topics
related to Orthotics and Prosthetics.
Public commercial postings are forbidden. Responses to inquiries
should not be sent to the entire oandp-l list.
Citation
John T. Brinkmann, “Laminating Question Responses,” Digital Resource Foundation for Orthotics and Prosthetics, accessed November 14, 2024, https://library.drfop.org/items/show/215496.
