Help With Build!!

[ugs92 10+ year member]

Okay today I took a ride up to HD today so I can start my build on a ported box for my 12" type r. I bought the wood and everything and I got my wood cut there also because i happen to know the guy that works there so the cuts were really good. Anyway im having one promblem, I need help on how to draw a perfect circle for my speaker onto the wood. I have an rotary saw so im all set just stuck on this part. I belive the cut diameter for an type r is 10.9 but can I just make it 11 or thats to big?

thanks

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[bonesninja 5,000+ posts]

11 is fine..i don't think 4 millimeters will make a difference

 

[ugs92 10+ year member]

I bought an compass also so i was just gonna trace it on a piece of paper and bam

 

[bonesninja 5,000+ posts]

here's how i do mine...i find the center of the space using an X, drive a nail in the middle with a hacksaw blade on the nail. Mark the blade with the right distance and push my sharpie around the arc and voila

 

[ugs92 10+ year member]

http://www.caraudiojunkyard.com/forum/tutorials/41-how-make-your-own-circle-jig.html

how about this idea

 

[ugs92 10+ year member]

i wish i can do this outside but its raining...

 

[ugs92 10+ year member]

2.5 cu @30hz..brb on how everything goes

 

[blimblam 10+ year member]

seems like a good idea.

 

[ugs92 10+ year member]

titebond lll ftw..

 

[ugs92 10+ year member]

well my first box attempt failed because of home depot..the back part of my box is too long and my port isnt wide enough so ima rebuild one this weekend and have my buddy cut the wood wit his table saw..wasted 3 hours today

 

[ugs92 10+ year member]

I dont know if this effects performance, but my port is supose to be 2.5" wide but its 2 1/4 wide..does this matter and i have to cut a new piece for my back wall for my box..luckly i still have pieces left over. If not ima just rebuild this weekend

 

[blimblam 10+ year member]

well my first box attempt failed because of home depot..the back part of my box is too long and my port isnt wide enough so ima rebuild one this weekend and have my buddy cut the wood wit his table saw..wasted 3 hours today

i guess you didn't know the guy well enough >.

 

[ugs92 10+ year member]

i guess you didn't know the guy well enough >.
yea i know.. but he did tell me that the saw there arent great and hard to cut perfect..oh well

 

[audioarsonal 10+ year member]

thats why you do it yourself and MEASURE TWICE CUT ONCE!