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/diy/ - Do-It-Yourself

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File: Note_20140512_130405_01(10).jpg-(110 KB, 792x1102)
Dear Diy/ I can't sleep...
Anonymous 06/26/14(Thu)06:29 UTC+1 No.658345 Report

Dear Diy/ I can't sleep trying to figure out how to make this plywood mold for this specific concrete shape, this are more or less the measurements of shape, shape is symmetrical.
Anonymous 06/26/14(Thu)07:13 UTC+1 No.658365 Report

There is a DIYer with four of these, maybe hook up with him...
Anonymous 06/26/14(Thu)07:53 UTC+1 No.658397 Report

Funny enough, there's another /diy/nosaur over here >>656238 looking to get rid of four of those.

See if you guys live near each other.
Anonymous 06/26/14(Thu)09:02 UTC+1 No.658425 Report

I just saw someone here that has these and no longer wants to have these. Maybe you could ask his neighbor.
Anonymous 06/26/14(Thu)10:18 UTC+1 No.658464 Report

What's difficult about it?

Set the coordinates to a grid, use Pythagoras' to get the one measurement you don't have, then cut and glue like you see Norm do on any project that's not square.
Anonymous 06/26/14(Thu)10:22 UTC+1 No.658466 Report

(if my early-morning math is correct, each panel is 416^0.5 inches long, and each seam 432^0.5).
Anonymous 06/26/14(Thu)13:51 UTC+1 No.658546 Report

I am not mathematics savvy or carpenterat at all, I need to be explained as a 5 years old :( how I get this angles perfect when making the plywood form?
Anonymous 06/26/14(Thu)13:53 UTC+1 No.658549 Report

Sorry forgot pic
Anonymous 06/26/14(Thu)14:35 UTC+1 No.658575 Report

It's only half a degree off of 90. You're not making a piece of furniture, so you don't have to have beautifully mitered corners. It just need to stay in one piece and not leak too much.

You could make a set of plates with a square hole cut out of the middle. One plate for the 8" square end (8") + (Thickness of plywood x 2) and another for the 4-inch end. You'll need a few more for the middle of the mold, say a 5 inch and a 6 inch.

Just attach those pieces to the plywood cone with slightly bent angle brackets.
Anonymous 06/26/14(Thu)14:55 UTC+1 No.658585 Report

Ok I am going to try this
Anonymous 06/26/14(Thu)19:04 UTC+1 No.658678 Report

>3/4" plywood
Anonymous 06/26/14(Thu)19:07 UTC+1 No.658680 Report

>math + imperial
haha jokes on you
but considering 4channers still think pi is 3.14 I won't object to that
Anonymous 06/26/14(Thu)19:09 UTC+1 No.658681 Report

I think I finally made it work using you advise diy/ thank you
Anonymous 06/26/14(Thu)19:11 UTC+1 No.658683 Report

Anonymous 06/26/14(Thu)20:02 UTC+1 No.658700 Report

This. Let's hope they fit in a flat rate shipping box.

OP are these going to be parabolic reflectors used to create a solar girl?
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