the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
icon

Noob Fiberglass Enclosure?


Post ReplyPost New Topic
< Prev Topic Next Topic >
ace_ram 
Member - Posts: 17
Member spacespace
Joined: October 15, 2005
Posted: October 31, 2005 at 8:39 AM / IP Logged  
I need to create a FB enclosure about 1.75 cu. ft. ported.  There would be big parts of the enclosure that would be flat.  How do you reinforce the flat areas? I have read that flat areas for FB is bad.  And what is the ideal thickness? For MDF it is 3/4 inch, would 1/2 inch for FB do? Does FB need bracing? I have experience making MDF enclosures, but not FB..
djrcustom 
Member - Posts: 24
Member spacespace
Joined: October 23, 2005
Location: United States
Posted: October 31, 2005 at 9:08 AM / IP Logged  
For flat areas try to use MDF, Fiberglass is brittle when its all flat. Make a MDF frame then wrap it in fiberlgass...Here is an example
HzEmall
For thickness its can be hard to tell sometimes, I do what most do and go with the thumb test, after you have a few layers on let it dry and then start pressing all over it with your thumb where it flex's down I ad a few more layers. Fiberglass won't need to be 1/2inch think though, about 6-9 layers with a thick matt should do the trick. Hope this helped :)
ace_ram 
Member - Posts: 17
Member spacespace
Joined: October 15, 2005
Posted: October 31, 2005 at 11:01 AM / IP Logged  
Thanks, this helped a lot.. But I would prefer a pure FB enclosure.. Is there a way to do this?
djrcustom 
Member - Posts: 24
Member spacespace
Joined: October 23, 2005
Location: United States
Posted: October 31, 2005 at 12:49 PM / IP Logged  
Yeah you can but the safest way to do it is use MDF, if you want all fiberglass one trick is to add some robe to make ridges in the flat areas. The more ridges the better, FG is much stronger with curves. Lay one or two layers down then while it is still sticky lay down the rope or anything else you have, I would say about 1-2 inches apart across the whole flat portion, then add a few layers to cover the ropes, but remember to let the FG harden between the layers (not fully but atleast to where it is stiff) GOod luck with it :)
Poormanq45 
Silver - Posts: 597
Silver spacespace
Joined: October 27, 2004
Location: United States
Posted: October 31, 2005 at 7:19 PM / IP Logged  
Ok, you do NOT have to use MDF. It defeats one of the main purposes of FG, which is light weight.
For the flat areas I have found that putting cardboard down, and then coating it on both sides makes it as hard(er) then MDF
ace_ram 
Member - Posts: 17
Member spacespace
Joined: October 15, 2005
Posted: November 01, 2005 at 12:48 AM / IP Logged  
Yep, I need it to be thinner than a 3/4 mdf so that I can have more volume for my SUV. Thanks, maybe I'll try the rope thing to strengthen the FB, by the way do I need to brace the FB enclosure(it's about 1.75 cu. ft.)? Thanks
realitycheck 
Silver - Posts: 751
Silver spacespace
Joined: September 09, 2004
Posted: November 08, 2005 at 8:51 AM / IP Logged  
Ace, as long as when you push on the fiberglass with your thumb and it doesnt flex. Then there is no need to brace it.  If it flexes then try some of the tricks they're talking about. The rope, or taking cardboard and painting resin on both sides of it then put a layer or two of glass over it.
Learning the trade one fiberglass creation at a time!
alexcd 
Member - Posts: 5
Member spacespace
Joined: November 17, 2005
Location: United States
Posted: November 17, 2005 at 2:18 PM / IP Logged  

djrcustom wrote:
For flat areas try to use MDF, Fiberglass is brittle when its all flat. Make a MDF frame then wrap it in fiberlgass...Here is an example
HzEmall
For thickness its can be hard to tell sometimes, I do what most do and go with the thumb test, after you have a few layers on let it dry and then start pressing all over it with your thumb where it flex's down I ad a few more layers. Fiberglass won't need to be 1/2inch think though, about 6-9 layers with a thick matt should do the trick. Hope this helped :)

Sweet install.  How many people did it take to carry that in there?

ace_ram 
Member - Posts: 17
Member spacespace
Joined: October 15, 2005
Posted: November 30, 2005 at 8:15 AM / IP Logged  
I am planning to make a FG enclosure and it will be attached to the back door of my mitsubishi Pajero(montero in the US).  How do you go about using bolts for your enclosure?
xplizt 
Member - Posts: 5
Member spacespace
Joined: December 20, 2005
Location: United States
Posted: December 20, 2005 at 1:27 AM / IP Logged  
washers... big washers
Page of 2

  Printable version Printable version Post ReplyPost New Topic
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

  •  
Search the12volt.com
Follow the12volt.com Follow the12volt.com on Facebook
Sunday, June 26, 2022 • Copyright © 1999-2022 the12volt.com, All Rights Reserved Privacy Policy & Use of Cookies
Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

Secured by Sectigo
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
Support the12volt.com
Top
the12volt.com spacer
the12volt.com spacer