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Old 01-07-2010, 01:01 PM   #11
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Re: Alternative to Monokote??

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OK..Next questions...

a. Where can I get that 3/4 oe 1/2 oz. glass cloth?
b. what kind of resin is used?
c. Am I or my Chihauhau going to get stoned by doin this in the basement?
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Old 01-07-2010, 02:37 PM   #12
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Re: Alternative to Monokote??

Well stocked hobby stores usually carry packets of this cloth. I think Sig packages them. If not then a composite supply house will have it. Aerospace composites, Aircraft Spruce and specialty, CST and in Canada, Composites Canada. Thay all have websites.

Use only epoxy resin. Do not use polyester. Polyester is very dangerous and you, your Chihauhau and the rest of your family will get stoned.

If you use West Systems epoxy get the slow hardener. It will allow a longer working time than the fast hardener. Unfortunately this type of work does not lend itself to one time uses. A lot of material gets left over and wasted. I could suggest a number of excellent products but they are not available in small quantites. For example, the epoxy I use is about $170.00/Gallon. I use a lot of it. It is actually the cheapesty way to buy it. If you have a use for it.

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Old 01-07-2010, 05:52 PM   #13
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Re: Alternative to Monokote??

Originally Posted by marco2236 View Post
OK..Next questions...

a. Where can I get that 3/4 oe 1/2 oz. glass cloth?
b. what kind of resin is used?
c. Am I or my Chihauhau going to get stoned by doin this in the basement?
a. Thunderbolt RC, supoporter of this site, has the cloth and smaller sizes of epoxy. Great Hobbies, another supporter, has the pacer Z-poxy finishing epoxy at $19, more than enough to do 1 model and it works well.
b. As mentioned above use only epoxy "finishing" type resin.
c. Not unless you want to...
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Old 01-07-2010, 11:29 PM   #14
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Re: Alternative to Monokote??

I bought my cloth from thunderbolt RC and the epoxy resin (part# 105) and slow hardener (part #206) I bought from a boat supply store. If you go to west system web site they have a store locater that will tell you the store closest to you. If you do go to the West system they have a pump system that you can buy that goes right on the cans, then just one press of the pump for both resin and hardener and it does not fill up a 3 oz water cup. Thats what I use for mine.
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Old 01-08-2010, 07:05 AM   #15
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Re: Alternative to Monokote??

I believe Lee Valley carries West Systems epoxy stuff and as mentioned, Thunderbolt has nice cloth; many LHS stock packs of F/G cloth 5/8oz or 3/4oz FWIW. Koverall works nicely with water-based urethane, I'm told. Nice non-toxic alternate for modest size projects.
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Old 01-08-2010, 01:36 PM   #16
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Re: Alternative to Monokote??

Heres a cheeper alternative for Finishing Poxy.
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Old 01-08-2010, 02:00 PM   #17
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Re: Alternative to Monokote??

There is no susbtitute for west epoxy, or any other brand of expoxy meant for glass work which has a ~60minute working time and ~24hr cure rate, and typically mixes 5:1.

These 20min potions are cheap adhesives meant for light structural work and are not intended for laying up glass.

The west system is your best option available at Lee Valley:,110,42965
1 kit will last a long time, and it comes with the metering pumps for easy dispensing. If you keep it around for more than a year, the resin may caoggulate. Just put it in a warm water bath and you're good to go.

It has a lot of other uses too. You can add fillers such s cabosil/colloidal silica or fibreglass strands to make it a structural adhesive, or you can add fillers such as microballons/talcum to lighten it up as a sandable fairing compound. It is the flagship system in modern boatbuilding.

As far as the glass cloth goes, check out a local boatbuildng supplier or you will pay a hefty premium at your LHS.

SIG Koverall is also an excellent alternative and lighter than epoxy/glass. Can be applied as stated above with waterbourne polyurethane. Stick it on with balsaright, shrink it, and paint away, or use dope to stick it on and seal it. It's old school, but it's cheap, effective, and many builders still swear by it.

pipercub55 has some at a good deal:
and he's only a couple hundred miles away from you.
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Last edited by Buzz; 01-08-2010 at 02:08 PM.
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