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Building Tips and technical articles. => Building techniques => Topic started by: Paul Allen on February 26, 2016, 02:29:39 AM

Title: Glass cloth
Post by: Paul Allen on February 26, 2016, 02:29:39 AM

Is there something you can treat glass cloth with to stop it fraying at the edges when its cut?
Thanks
Paul
In OZ

Title: Re: Glass cloth
Post by: Wade Bognuda on February 26, 2016, 05:46:36 AM

Hairspray.

Title: Re: Glass cloth
Post by: Motorman on February 26, 2016, 08:43:35 AM

Sharp scissors and careful handling.


MM

Title: Re: Glass cloth
Post by: Target on February 26, 2016, 09:09:34 AM

A light mist of 3M77 spray is just the ticket.
It keeps the fabric from unraveling.
Additionally, the same lightish spray will allow you to place it on the surface its going to be on, and then lifted off, if needed, to get wrinkles out, before it ever sees epoxy.
Works fabulous, experiment with this method.

Good luck,
Chris

Title: Re: Glass cloth
Post by: Dave Holtsclaw on February 27, 2016, 07:30:15 PM

hairspray

Title: Re: Glass cloth
Post by: Istvan Travnik on March 01, 2016, 05:12:10 PM

It is a good idea, to reserve one scissor to cut glass & carbon, nothing else. (No paper, no brass or tin for tank, no plastic for canopy)
The oldschool detachable ones are better (no Fiskars, etc), and you should whet it yourself, in  " X " shape, in dis-assembled state.
I use mine for 35 years,  and works fine.  See:
https://lh6.googleusercontent.com/--zysFrokoEA/T1AS4eLTbQI/AAAAAAAAACw/tSoVIl8iFYc/w764-h573-no/20120121025.jpg

Title: Re: Glass cloth
Post by: Steve Helmick on March 02, 2016, 11:05:33 PM

 Another old trick is to outline your fiberglass cloth bit with (Scotch) tape and cut (with scissors) roughly down the centerline of the tape. I'm not sure if Scotch tape is mylar or vinyl or just what. I'd bet that even vinyl electrical tape or masking tape would work fine, tho.  y1 Steve

Title: Re: Glass cloth
Post by: Steve Gibson on June 01, 2016, 09:35:16 PM

I've read when glassing a center section, lay an oversized piece of fiberglass on a sheet of wax paper.  Saturate the fiberglass with epoxy or resin and don't worry about the frayed fiberglass strands.  Once the cloth is saturated, cut the cloth While it is still on the wax paper.  Cut through the cloth AND the wax paper.  Now you have perfect straight edges on the cloth.  Pick up the wax paper with the cloth still attached and drape the cloth onto the balsa surface.  Once the cloth is positioned correctly, pull the wax paper off.

Title: Re: Glass cloth
Post by: Balsa Butcher on June 02, 2016, 07:44:23 PM

The easiest way to get a straight, unfrayed cut is to ditch the scissors and use a rotary fabric cutter. They can be found at at Walmart or any place fabric is sold for around $10.00. Really, you will be impressed.  8)

Title: Re: Glass cloth
Post by: Gerald Arana on June 02, 2016, 07:51:55 PM

Quote from: Balsa Butcher on June 02, 2016, 07:44:23 PM

The easiest way to get a straight, unfrayed cut is to ditch the scissors and use a rotary fabric cutter. They can be found at at Walmart or any place fabric is sold for around $10.00. Really, you will be impressed.  8)

Hi Pete,

I was going to say the same thing except I got busy and then forgot to post.

I've been using the rotary cutter for years and I find it to be absolutely the best method for cutting FG.

I also use the toilet paper method to remove excess resin. Works like a charm. (For me anyway)

Jerry