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How to Make a Fiberglass Enclosure


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Velocity Motors 
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Joined: March 08, 2002
Location: Manitoba, Canada
Posted: June 09, 2006 at 8:36 AM / IP Logged  

tebeatles wrote:
I had a few questions about the cover. I think what you said to do is after you foil the original box you essentially paint on the 5:1 body filler/resin mix to the box and foil? I was wondering is it fairly easy to paint the 5:1 mix on the foil without ripping the foil? Also is it just one coat of the 5:1 mix? Or did you do multiple coats of the 5:1 mix then pull the cover off of the box?  Did you sand the cover before you pulled it away from the original box or did you pull the cover off the box and then sand it? (Just want to know the eastiest way to sand the cover so it dosn't crack. Also seems like it would be easier to sand the cover before you pulled it away so you can put more force into it when you are sanding it) And did you reinforce the back of the cover after you pulled it away from the original box, with resin and fg mat. Seems like it would be a brittle piece it you didnt reinforce it and it would be hard to sand without cracking it. (Ive never done the 5:1 mix but theres nothing holding it together, such as the mat, I want to make a clean piece but dont want to crack it when I am sanding it) Just wanted to be goining in the right direction before I start. Thanks Chris How to Make a Fiberglass Enclosure - Page 5 -- posted image.

After I foil the original box, I used fiberglass matting to get the shape I wanted and after sanding down the fiberglass I used the 5:1 mixture body filler/resin to coat the cover for sanding. Depending on your mold you may have to use multiple layers of the filler/resin mixture.

Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Velocity Motors 
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Joined: March 08, 2002
Location: Manitoba, Canada
Posted: June 09, 2006 at 8:41 AM / IP Logged  
samtucan11 wrote:
I am still trying to figure out, the best way to attach a fiberglass trim/insert panel? If you do not want it perminently attached how do you attach it? Lets say i want to make a fiberglass panel over some batteries that i need to get to, to charge, i would make an insert panel right. But how can i attach it? I cannot use screws, because screw heads would ruin the whole look, i cannot use an epoxy because that would be perment, anyone have any suggestions on how to attach a removable fiberglass insert panel? i really appreciate it

You have to build it so that you have tabs on the back so you can remove the cover peice. Just like home speaker cover's have the bullet connectors that press into a femail connector. You will do the same with the fiberglass cover. It's all in the design of what your trying to do.

Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Velocity Motors 
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Joined: March 08, 2002
Location: Manitoba, Canada
Posted: June 09, 2006 at 8:47 AM / IP Logged  
the rah wrote:

dude!

i tried that with the resin and body filler man!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

for me it was more work ,because once it dried it had like waves and dips in it. but yours came out awsome.good jobHow to Make a Fiberglass Enclosure - Page 5 -- posted image. 

The key to makinf sure you don't have waves and dips is to make sure that you get to sanding the area before it dries. Get it at the stage where the mixture is 75 % dry and use 36- 50 grit sand paper on a soft sanding block and go to town and sand down the project before it totally dries. It will gum up your paper rather quickly but will take off lots of the mixture ( which is what you want ) because this is the excess stuff that is the high spots on the project.

Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
tackbradley 
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Member spacespace
Joined: May 15, 2006
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Posted: June 09, 2006 at 10:13 AM / IP Logged  
hey Jeff, is wetsanding an option at this point? or will the water have an affect since its not completely dry? if wetsnading is an option, it will save your sandpaper a bit and not gum up so quickly. this is a great thread!!!
~Jason
(516) Drum Co.
Velocity Motors 
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Joined: March 08, 2002
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Posted: June 12, 2006 at 8:27 AM / IP Logged  
Jason, wet sanding is not an option at this point because it's not smooth enough to start with a wet sanding grit paper. One way to recover your gummed up sand paper is to have two sanding blocks going at the same time but using them alternately and when ones is dry you can rub them together to remove the built up body filler.
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
xtremej 
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Posted: June 12, 2006 at 12:01 PM / IP Logged  
Hey just an idea but sometimes I'll use screened sand paper, usually 80 grit, if it gums up give it a shot of compressed air to clean it out. I ordered mine throught the harware store, I've never really looked to see if it can be bought anywhere else. Hope it helps ya out.
Velocity Motors 
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Joined: March 08, 2002
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Posted: June 12, 2006 at 9:28 PM / IP Logged  

xtremej wrote:
Hey just an idea but sometimes I'll use screened sand paper, usually 80 grit, if it gums up give it a shot of compressed air to clean it out. I ordered mine throught the harware store, I've never really looked to see if it can be bought anywhere else. Hope it helps ya out.

Is the screened sand paper available in a Hook It style ?

Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
xtremej 
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Posted: June 13, 2006 at 10:33 AM / IP Logged  
I'm not sure the suff I got isn't, I have to pick up some stuff this weekend I'll take a look thru there catalogs.
cortina 
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Member spacespace
Joined: June 17, 2006
Posted: June 19, 2006 at 2:41 AM / IP Logged  

I just made my fg enclosure today and i am planning to use a 5:1 mixture of stucco with wood white glue as a filler.

What is Stucco? http://en.wikipedia.org/wiki/Stucco

The white glue helps to make the mixture stronger when dry.

This type of filler is easy to sand and quite strong and very cheap to buy.

However my only concern is whether it is compatible with high power bass frequencies. The box is made using 8 layers of glass so i dont think that there will be much force exerted on the filler.

Velocity Motors 
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Joined: March 08, 2002
Location: Manitoba, Canada
Posted: June 27, 2006 at 1:31 PM / IP Logged  
From what I can gather, the Stucco would eventually break off from the bass & also not sure about the primer adhering to the stucco ?
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
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