posted
i got a couple of q's for you guys i'm making a sub box in my trunk and i was wondering.... ok say i did the first couple of layers over the masking tape and remove the mold, i secured the ring and is now time to stretch fleece over it. 1) i spray some 3m adhesive around the edges of the mold, say 2-5 inches, and i stretch the fleece around it . what happends when i apply resin on top of it later? wont the glue stop the resin from bonding to the mold? (as in, get in the way)
2) ok say the previous step went fine and the fleece i stretched over the mold did bond with the mold (hoping that glue wont get in the way). won't that mess the mold around the edges where i streched the fleece? the way i think about it, the mold won't fit exactly as before because around the edges theres an extra layer of fleece (the one i streched around it..
comments? if there's something you dont understand just say so
i appreciate the input thanks
-------------------- JDM 92 civic hatch Pioneer Premier P930 Head Jbl 80.4 fot the mids and highs (2) Jbl 1200.1 (2) RE 12" XXX 6.5 cube box tuned to 33hz Iraggi 200amp HO Alt ABC6002Q For the front stage (save it, its just for a few days) Stinger 0/1 , 4 and Audiobahn twisted all around
-------- EVERYTHING SOLD--------- Posts: 468 | From: Tucson AZ | Registered: Dec 2001
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posted
I wouldn't worry too much about the glue...but I'm not too sure that just the glue in itself will actually hold the fleece. When I stretch fleece, I use staples, and those have a hard time holding it...seems like spray on glue would be a PITA. But then again, I've never tried it that way, so it may work.
Also, you will be adding a little bit of extra material to the original mold, but you can sand that down later if necessary, or you can just shove the mold back in and it will probably still fit...its not that much extra material. Another alternative is to just glass right where the edge of the mold is, don't glass around the sides where it will alter the mold...if that makes sense. Then you could glass the inside of the box to reinforce those bonds. Do you need it to fit perfect, or are you just concerned with getting it back into the right place? It'll flex a little bit so it should fit.
-Matt
Posts: 233 | From: Wa | Registered: Dec 2002
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i didnt know i could staple on fiberglass... remember, i'm stretching the fleece around a fiberglass mold, not mdf. do i need an air stapler for that or do those cheap ones do the trick?
got you about the edges... that makes sense
oh somthing else i wanted to ask, i'll obviously be doing multiple layers of glass... so when is it the time to do them? should i do a few over the mold after i release it and then stretch the fleece over it? doing layers on the back will obviously mess up the mold, so i dont see another way of doing it
and what about when i'm done with stretching and glassing the fleece, i can't imagine me doing extra layers from the inside of the box (through the speaker ring),it sounds like a royal PITA, but i also dont imagine the shape ending up the same after 5-6 layers on the outside
thanks again
-------------------- JDM 92 civic hatch Pioneer Premier P930 Head Jbl 80.4 fot the mids and highs (2) Jbl 1200.1 (2) RE 12" XXX 6.5 cube box tuned to 33hz Iraggi 200amp HO Alt ABC6002Q For the front stage (save it, its just for a few days) Stinger 0/1 , 4 and Audiobahn twisted all around
-------- EVERYTHING SOLD--------- Posts: 468 | From: Tucson AZ | Registered: Dec 2001
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posted
Glue will not hold, it will release when the resin hits it.
If you've already fiberglassed your base and there is no MDF to staple to then you've kind of screwed yourself as it will be much harder to pull the fabric and make it stay. If you shoot staples into fiberglass they will either bend or crack the fiberglass.
Aside from that, you will want to do the build up/reenforcing of your enclosure from the inside of the box. If you do it on the outside it will take a lot of extra work to fill, sand, and smooth the exterior of the enclosure. So get ready to do a lot of block sanding if you build up on the outside.
I would cut a piece of MDF to match the top of your fiberglass mold. Glass it in from the bottom side so that it is structurally sound. Then pull the cloth to that piece of MDF and staple it around the edges. But that is still going to leave you in building up the enclosure from the outside. (which I try to avoid at all costs)
Posts: 279 | From: GA | Registered: Nov 2003
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posted
hmm.. what if i do like 5 inches of glue around the edges and only glass 1 or two, so the remaining 3 inches of glue will still hold the fleece stretched around it... then again, will the glue actually hold the fleece?
-------------------- JDM 92 civic hatch Pioneer Premier P930 Head Jbl 80.4 fot the mids and highs (2) Jbl 1200.1 (2) RE 12" XXX 6.5 cube box tuned to 33hz Iraggi 200amp HO Alt ABC6002Q For the front stage (save it, its just for a few days) Stinger 0/1 , 4 and Audiobahn twisted all around
-------- EVERYTHING SOLD--------- Posts: 468 | From: Tucson AZ | Registered: Dec 2001
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posted
Yeah, you're pretty much going to have to glass the inside from the sub hole. It sucks, but if you've never sanded this stuff before you'll realize how much easier it is to do it that way.
I would just try staples. I guess it depends on how many layers of glass you used for the mold. I really doubt that it will crack, but use a lot. They won't go all the way into the fiberglass. Otherwise...geez, I'm not really sure how you would do it.
I don't see how glue will work, you might as well just use resin to hold it on if you're going to try that way. When you pull the fleece, you pull pretty hard, and unless you want to sit there while it sets, I don't have any idea how its going to work. If you think you can do it though, go for it.
Anyway, its a learning process, so try whatever you think will work.
-Matt
Posts: 233 | From: Wa | Registered: Dec 2002
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posted
If your mold has a few lers to it, chances are stapling it wil be a PITA. You should have a pretty strong base (a few layers thick) If not your mold will flex when you stretch fleece on it. How about this...
First try stretching fleece and gluing on the backside of the mold FURTHER than what you are going to resin. (Like you said- gluing 6" and maybe glassing up to about 3") The resin should still bond with the glassing regardless of the glue. **After it dries, pour some resin into the box and rotate the box around so that it fills any gaps between the stretched fleece and the base.**
OR
Do the first cover up with speaker grill cloth. It's a bit easier to stretch. If you can tack that down and resin it, you then have a base that you can stretch the fleece around. **then do the steps above in the asteriks**
OR last but not least...
You can try and cut a few areas out of the base that you then resin some wood onto the base mould(the wood would then be inside the box) so that you then have a few key areas that you can staple the fleece to. (High tension pull areas)
Good luck, and don't be afraid to try things out. You can always trim or sand off what doesn't work out. As stated above, it's a learning process.
-------------------- Yes this is my sig, no there is nothing for you to read. Quit looking at me, nothing is going to happen. Stop staring at me, cut it out, leave me alone.... Posts: 3022 | From: AZ | Registered: May 2003
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posted
thanks everyone tucson eh? what part? i'm at the u of a area
-------------------- JDM 92 civic hatch Pioneer Premier P930 Head Jbl 80.4 fot the mids and highs (2) Jbl 1200.1 (2) RE 12" XXX 6.5 cube box tuned to 33hz Iraggi 200amp HO Alt ABC6002Q For the front stage (save it, its just for a few days) Stinger 0/1 , 4 and Audiobahn twisted all around
-------- EVERYTHING SOLD--------- Posts: 468 | From: Tucson AZ | Registered: Dec 2001
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posted
glu will not hold if u saturate it with resin, however i use spray glue to hold the fleese
i gleue the fleese about 2 inches in all the eay around the mold. then i make sure to reson only to the edge so i dont mess with the the rest so the glue holds. makeing sure thas the edges are saturated with resin really well
after it dries i then resin the inside of the encloseure by just poring in some resin and then moving it around to make sure that i coat the entire inside making sure that the edges and corners get covered (sometimes takes two or more coats)
once it all dries i peel back the fleese that was glued and then use eather a jig saw, grinder, dremel, or whatever u have to trin the fleese off.
this will leave the formed edge un tuched and it will fit right in
-------------------- our drinking team has a stereo problem Posts: 15 | From: Rhinelander, WI | Registered: Dec 2004
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