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- From: lrs@cs.utexas.edu (Leona R. Slepetis)
- Newsgroups: alt.sewing
- Subject: Re: Hot Knife (was Re: ballgowns)
- Date: 23 Dec 1992 12:06:58 -0600
- Organization: CS Dept, University of Texas at Austin
- Lines: 47
- Distribution: world
- Message-ID: <1ha9s2INNckm@im4u.cs.utexas.edu>
- References: <1h89usINN5g0@agate.berkeley.edu>
- NNTP-Posting-Host: im4u.cs.utexas.edu
-
- In article <1h89usINN5g0@agate.berkeley.edu> pora@hera.Berkeley.EDU (Pora Park) writes:
- >Hey, thanks for mentioning the Hot Knife,
- >Karen Robinson. I just called Jehlor and they
- >are, indeed, $25.25 ($28.75 w/tax & shipping).
- >
- >My question: Anybody ever used one of these things???
- >Any last-second warnings before I lay out the cash?
-
- I use a hot knife very often, mostly on thin nylon ripstop.
- It does a great job of keeping the edges from raveling, but
- there are a few things to watch out for.
-
- Hot cut nylon becomes hard and brittle. You don't want these
- edges next to your skin, so use something like felled seams
- in those areas.
-
- If you expect the hot cut edge to be thick enough to give the
- fabric body, note what I said above about brittlenes. It will
- crack (at least on nylon) and not give a smooth line. This
- depends on technique and the fabric. Something like chiffon
- probably can't get thick enough to be a problem, but I have
- found that hot cut spandex looks just awful. Trimmings could
- be used to cover the edge, of course. As for technique, if
- you go just fast enough to cut the fabric, there probably won't
- be much buildup of melted stuff.
-
- Keep a damp rag or cellulose sponge around to clean the burnt
- remains off the knife. Otherwise, it will eventually start
- coming off on what you are cutting.
-
- Lay the fabric on glass or something smooth. Formica is fine.
- If the fabric sticks to the surface, it may distort when you
- pull it up. Use a thin ruler laid flat on the surface to "slice"
- it off. This causes less damage to the fabric than pulling it
- up.
-
- Ventilate! The fumes from melting synthetics are not good for
- you.
-
- Practice! Try the knife on scraps before you cut your masterpiece.
- Every weight and type of fabric behaves differently. I have worked
- almost entirely with nylon; polyester may be different.
-
- Good luck.
-
- Leona Slepetis lrs@cs.utexas.edu lslepetis@mcimail.com
-
-