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Stupid question--cutting fiberglass cloth

Old 03-04-2004, 01:58 PM
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Default Stupid question--cutting fiberglass cloth

How do you cut fiberglass cloth off of a roll without shredding and fraying? Thanks.
Old 03-04-2004, 02:03 PM
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Default RE: Stupid question--cutting fiberglass cloth

Use clear nail varnish to 'paint' a .5cm accross the width you are going to cut, wait a few mins for it to set and then cut the cloth. Both cut ends will then be sealed.
Old 03-04-2004, 02:06 PM
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Default RE: Stupid question--cutting fiberglass cloth

stop by your local fabric store and buy a cloth cutting wheel. It is a plastic handle with a sharp metal disc that when you roll it across the fiberglass it cuts it clean. THey sell plastic sheets that you cut on but I generally just cut on a piece of plywood. For smaller pieces I just use scissors.
Old 03-04-2004, 02:14 PM
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Default RE: Stupid question--cutting fiberglass cloth

This one is available from Aircraft Spruce but is the same one you can buy at the fabric store http://www.aircraftspruce.com/catalo...es/cutters.php
Old 03-04-2004, 02:34 PM
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Default RE: Stupid question--cutting fiberglass cloth

You didn't say what weight cloth you are cutting but if it is @2 oz or more... a neat trick is to remove 1 cross thread where you wish to cut. Cut within the space of the missing thread and you will always have a nice cut. It might be more difficult for lighter weight cloth.

You can also spray a very light coat of 3M 77 before you cut to help hold the end together.

Bill

[link=http://www.paonline.com/hayman/video.htm]MADE EASY DVD's[/link]
Old 03-06-2004, 10:00 AM
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Default RE: Stupid question--cutting fiberglass cloth

I spray the cut line with aerosol hairspray to keep the threads from coming loose. I also use it to tack the glass down to whatever surface it's going on. Wonderful stuff.

Another tip is to wear vinyl gloves when handling the glass cloth. My fingers, especially during winter building season, have lots of little dry cracks that catch the threads and pull the cloth apart, but with gloves on the cloth gets gentle handling.
Old 03-06-2004, 03:42 PM
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Default RE: Stupid question--cutting fiberglass cloth

I do not use any gadgets or gimics. I use a very sharp pair of scissors. The scissors are sharp enough to cut a thread partialy along its length without it rolling out and fraying. I found that with the cutting wheel, if the surface underneath has any dents or cracks from previous cutting the wheel pushes the glass thread into the crack. When the required piece is removed it catches and pulls and frays.

Go with the sharp scissors.

Ed S
Old 03-07-2004, 12:26 AM
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Default RE: Stupid question--cutting fiberglass cloth

When your at the fabric shop getting the cutting wheel, get a self-healing cutting board, lagre size to cut on. Works great for cutting plastic film covering also.
Old 03-07-2004, 08:28 PM
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Default RE: Stupid question--cutting fiberglass cloth

CARD BOARD!

It works so well, I am a new convert.... and not because it is cheap

with a sharp hobby knife and card board as a base you can cut your name out of 3/4 oz fiberglass..... NO PROBLEM.

my 2 cents.
Old 03-07-2004, 08:51 PM
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Default RE: Stupid question--cutting fiberglass cloth

If orientation doesn't matter, cutting on the bias (Diagonally) gives a nice, clean cut [sm=biggrin.gif]

Dan
Old 03-12-2004, 07:05 PM
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Default RE: Stupid question--cutting fiberglass cloth

When cutting light weight fiberglass I just lay the fabric on regular printer paper and cut them both at the same time with a pair of sissors and then throw away the paper. Works great!
Old 03-14-2004, 10:12 AM
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Default RE: Stupid question--cutting fiberglass cloth

My two cents worth>>>go to Wal Mart fabric department and get their Fiskars cutting board and cutting wheel set. I think I paid like $14 for mine. What a pleasure to use and it sure saves time. I do use sharp scissors for some cuts but the wheel is the way to go. By the way, there is no such thing as a stupid question. Because of comments here, I tried the cutting wheel and am glad I did. You learn by others.
Larry
Old 03-14-2004, 01:01 PM
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Default RE: Stupid question--cutting fiberglass cloth

VERY sharp scissors

goony
Old 03-16-2004, 09:57 AM
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Default RE: Stupid question--cutting fiberglass cloth

I love my cutting wheel, but it doesn't work with plywood backing.
Old 03-16-2004, 12:25 PM
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Default RE: Stupid question--cutting fiberglass cloth

I agree, self healing cutting mat and cutting wheel work very well together.
Old 03-19-2004, 11:43 PM
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Default RE: Stupid question--cutting fiberglass cloth

This is from a recent RC magazine tips and tricks.......

Take wax paper.
Spray a LIGHT coat of some 77 or artist contact adhesive on it.
Let tackify.
Drop your new glass cloth on it neatly and smooth out.

This makes a nice peel away "backer" for the glass that keeps it nice and flat while cutting. You can cut as needed, and it will hold together nicely until you pull the paper off.

Supposedly does not affect wet out with resins - ?
Works nice.[sm=thumbup.gif]
Old 03-27-2004, 07:31 PM
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Default RE: Stupid question--cutting fiberglass cloth

Electric scissors works for me.
Old 04-09-2004, 03:36 PM
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Default RE: Stupid question--cutting fiberglass cloth

Gday Mike, from down under, get some STICKY tape...marsking or other, 1/2" wide and lay it half over your cut line, all the way around, bone it down and cut out your piece through the tape, if you can find some STICKY transparent tape , works better to line up over your mark. If the edge is going to be part of the layup, wet out everything up to the edge then brush some thinner thru the glass to soften the tape adhesive and remove. this works very well on the bias cut bits. on realy thick cloth ect, once your piece is cut out turn it over and tape the other side. this also helps the piece keep its shape. TTFN

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