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View Full Version : how hard would it be to make this box?



d audio 450
03-02-2003, 02:53 PM
ok- hers the plan-
i want to use 1inch mdf board to make a single box for a xxx 10", but i want the box to have a plexi-glass window in it so i can have neons reflecting off the sub. heres the shape of the box i want:

the blue striped plane is where i want the plexi glass to be...


any comments suggestions apprecited
-pat

ridered36
03-02-2003, 02:57 PM
I think the only hard part would be bending the plexiglass to fit around the edge. Other than that, shouldnt be bad and would look good.

d audio 450
03-02-2003, 02:59 PM
i'd assume you have to heat it up and bend it?
would a heat gun work?
thanks agian
-pat

ss3079
03-02-2003, 02:59 PM
It's rather simple to build that box, actually...if you have basic wood working knowledge and skills.

Bending the plexi could be done with a heat strip...and you will need thick plexi, upwards of 1/2" or thicker.

- Steve

ridered36
03-02-2003, 03:02 PM
WIll the glass become discolored if over-heated steve?

ss3079
03-02-2003, 03:09 PM
Originally posted by ridered36
WIll the glass become discolored if over-heated steve?

It would melt...underheating would make you crack it.

You would have a ****** bend if you overheated it...and if you used a heat strip, it would leave an ugly texture on your plexi, right where the bend is...because its starting to melt and touch the material. Couple tips - measure and mark where you want to bend...make sure the plexi is straight across the heat strip, not on an angle...hold the bottom and slowly lift up the top to test if it is warm enough and ready to go...you will be able to tell because it will be real slow going back down and very easy to lift up...then bend over the corner of a counter...making sure it is straight...the marks on the sides of the plexi you pre marked earlier will help you out drastically. I dont know how you would bend 1/2" or bigger plexi on a heat strip...

- Steve

d audio 450
03-02-2003, 03:21 PM
hmmm- this doesnt sound easy- could i get a plexi dealer to do it for me by any chance?
thanks
-pat

ss3079
03-02-2003, 04:11 PM
Im sure they would be more than happy to do it for you:)

Unless they are assholes...

- Steve

ASDF12345
03-06-2003, 05:19 PM
bending plexi is very hard. especially since yours will have to be thick. firs preheat your oven to 300 degrees. get some tinfoil and cover it with pam. then lay the plexy on top of the tinfoil and put it on top a jig made from Preferably some kind of stone or cement. put that on top of a baking pan. then throw it in the oven. you need to bake it for a good 15 hours on like 315 degrees to even get it tender. then crank it up to 350 and let it sit for another 6 hours to get all the H2O out of the plexi so it doesnt bubble up.then you should have some semi flexible clear plexi glass. if the gravity hasnt started to push the top part down onto the right angle jig to for the bend then get some high heat gloves and push it. then crank up the heata little and push it. then repeat untill its bended. take the temp down gradually over like a two hour span. let it sit overnight causeit will be brittle untill its completely cooleddown. then sand the edges down so it fits correctly if you need too and it should be fine.

note: if you use thinner glass, it will be much easier, less time, less heat.

ASDF12345
03-06-2003, 05:24 PM
Originally posted by ss3079
It would melt...underheating would make you crack it.

You would have a ****** bend if you overheated it...and if you used a heat strip, it would leave an ugly texture on your plexi, right where the bend is...because its starting to melt and touch the material. Couple tips - measure and mark where you want to bend...make sure the plexi is straight across the heat strip, not on an angle...hold the bottom and slowly lift up the top to test if it is warm enough and ready to go...you will be able to tell because it will be real slow going back down and very easy to lift up...then bend over the corner of a counter...making sure it is straight...the marks on the sides of the plexi you pre marked earlier will help you out drastically. I dont know how you would bend 1/2" or bigger plexi on a heat strip...

- Steve

i wish it were this simple

ss3079
03-06-2003, 06:04 PM
Originally posted by Grand AMature
i wish it were this simple

Actually, it is this simple. If you are using thinner plexi glass, that is.

- Steve

ramos
03-13-2003, 09:52 AM
I wouldn't even try to bend the plexi. I would just make the front panel out of plexi, or put a plexi window in the front. It would get the same look your after and be a heluva lot easier. :)

And I know an easier way to bend thicker plexi. but i can't tell all of my secrets :evil:

ss3079
03-13-2003, 10:47 AM
Originally posted by ramos
I wouldn't even try to bend the plexi. I would just make the front panel out of plexi, or put a plexi window in the front. It would get the same look your after and be a heluva lot easier. :)

And I know an easier way to bend thicker plexi. but i can't tell all of my secrets :evil:

Where in Virginia are you??

- Steve

ramos
03-13-2003, 11:00 AM
Roanoke/ Salem right down the road from Virginia Tech. :)

ss3079
03-13-2003, 06:13 PM
Ah cool. I have a few friends out that way...how far are you from Southern Maryland?

- Steve

ramos
03-14-2003, 06:40 AM
About 4 or 5 hours maybe. He!! I don't really know :D . I'll check it out and see. :)

ss3079
03-14-2003, 10:40 AM
Originally posted by ramos
About 4 or 5 hours maybe. He!! I don't really know :D . I'll check it out and see. :)

Lol, cool.:)

- Steve

ss3079
03-14-2003, 08:38 PM
She told me it is around 6 hours from her...she also mentioned there being lots of boonies there also:D

- Steve

ramos
03-18-2003, 06:34 AM
Boonies ..... I couldn't really tell ya that. I can't tell them apart from the rednecks :)

Trixter
03-19-2003, 10:55 AM
If you were able bend the plexi, wouldn't that corner of the box also have to be curved? Why not use two seperate pieces and drill/screw/epoxy them together? Use something thick like 3/4 or even 1". If your using 1"mdf then go w/ 1".

Or, if your conserned about mounting the plexi, if your using 1" mdf, go with 1/4 or 3/8 plexi, router the edges and drill/screw it down that way. I'd sill go w/ 2 seperate pieces, and the thicker the plexi the better...as far as flexing is concerned.

ramos
03-20-2003, 01:21 PM
Originally posted by Trixter
If you were able bend the plexi, wouldn't that corner of the box also have to be curved? Why not use two seperate pieces and drill/screw/epoxy them together? Use something thick like 3/4 or even 1". If your using 1"mdf then go w/ 1".

Or, if your conserned about mounting the plexi, if your using 1" mdf, go with 1/4 or 3/8 plexi, router the edges and drill/screw it down that way. I'd sill go w/ 2 seperate pieces, and the thicker the plexi the better...as far as flexing is concerned.


That would work. Just use plexi adhesive and the joint will be almost invisiable. The thikness really depends on the power your talking about. And the actual size of the panels. 3/4", and 1" plexi is some pretty strong $hit. You realy don't need to go to those extremes unless your way up on the power scale. People use 1" plexi for windows in extreme cars. That's alot more pressure than your average joe is ever going to put on it. :)

bumpin_blazer
03-20-2003, 01:34 PM
Originally posted by ramos
That would work. Just use plexi adhesive and the joint will be almost invisiable. The thikness really depends on the power your talking about. And the actual size of the panels. 3/4", and 1" plexi is some pretty strong $hit. You realy don't need to go to those extremes unless your way up on the power scale. People use 1" plexi for windows in extreme cars. That's alot more pressure than your average joe is ever going to put on it. :)

not to mention freaking expensive out the ***. i was pricing 3/4" plexi a while back that stuff was like 400 bucks for a sheet and that's the only way you coudl get it.

adam

Trixter
03-20-2003, 06:44 PM
Originally posted by Trixter
If you were able bend the plexi, wouldn't that corner of the box also have to be curved? Why not use two seperate pieces and drill/screw/epoxy them together? Use something thick like 3/4 or even 1". If your using 1"mdf then go w/ 1".

Or, if your conserned about mounting the plexi, if your using 1" mdf, go with 1/4 or 3/8 plexi, router the edges and drill/screw it down that way. I'd sill go w/ 2 seperate pieces, and the thicker the plexi the better...as far as flexing is concerned.

In that case, the second option sounds a little better then.