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reinforcing box with fiberglass


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knotdrummer88 
Copper - Posts: 162
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Joined: January 30, 2010
Location: Ohio, United States
Posted: September 24, 2010 at 11:42 PM / IP Logged  
when reinforcing a box with fiberglass can you use just the resin? and is catalyst necessarry?
dman007 
Copper - Posts: 106
Copper spacespace
Joined: November 24, 2002
Location: Florida, United States
Posted: September 25, 2010 at 9:00 PM / IP Logged  
You could use just resin, but it will not have something to soak into without the fiberglass. So basically the resin will just be dripping everywhere.
Catalyst is what turns the resin hard. Without it, the resin will never cure and will flow like paint.
DTS Performance
St Petersburg, FL
knotdrummer88 
Copper - Posts: 162
Copper spacespace
Joined: January 30, 2010
Location: Ohio, United States
Posted: September 25, 2010 at 11:38 PM / IP Logged  
ok, and how important is it that the catalyst is added in the exact right amount? what will happen if i add too much? or too little?
itchyback 
Member - Posts: 7
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Joined: August 12, 2010
Location: Australia
Posted: September 30, 2010 at 11:58 PM / IP Logged  

If you add too much it will set really quickly with alot of heat or might even catch fire (havent seen it myself but have been told), if you add too little it wont set and will remain runny.

I recommend using the fibrglass matt/ clothe to reinforce, the resin itself is quite brittle, a few bumps in your car and i reckon it would break. use a thin one like 250gm to save weight if thats your concern.

knotdrummer88 
Copper - Posts: 162
Copper spacespace
Joined: January 30, 2010
Location: Ohio, United States
Posted: October 01, 2010 at 11:10 PM / IP Logged  
no sir, weight is not a concern. but thank you very much for your help! and also ive seen guys pour resin into an enclosure and set it on a 45 degree angle to 45 the corners. should you add matt after that? or before? thank you again
itchyback 
Member - Posts: 7
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Joined: August 12, 2010
Location: Australia
Posted: October 07, 2010 at 8:12 PM / IP Logged  

I'm confused as to why you're doing it in the first place, i dont think it will have any structural benefit and if its on the inside - no cosmetic benefit, but if i was to put pure resin in the corners it would depend on the corners.... 

If the corners are at a sharp bend (say more than 30degrees) you should definately apply the matt after because the matt wont bend around sharp corners by itself - you'll get air bubbles. If your particularly keen to do it before use a piece of angled metal/ plastic coated with wax and clamp over the wet matt.

If the corners are rounded, you could choose to do it before or after, putting the pure resin on after would give you a smooth finish, if it was me, i'd apply the matt on after the resin to add some strength to the resin and hold it in place/ minimise cracking.

knotdrummer88 
Copper - Posts: 162
Copper spacespace
Joined: January 30, 2010
Location: Ohio, United States
Posted: October 10, 2010 at 10:18 PM / IP Logged  
fiberglass the inside for strength, but im not as concerned with cosmetics, so i could do the outside, or not. doesnt matter as much how it looks

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