Where DO you think would be better but cheap to make a mold out of?

ok with this whole 2 by 4 thing to get more concave just take a bench grinder turn the cut peice on its side and grind it down to give it more concave

making the top part and bottom part exactly sounds hard

what i spmetimes do is cut the 2x4 sand the shape out of the bottom,
then bondo the top on.

white

resin. it costs as much as bondo. OR take thin sheet mettal and bend it to your liking. then rienforce it with bondo

i did a bondo before. cracked easily. hot glue too. metal wouldnt work that well. i tried to shape the concave but i fail like mad

epoxy

true but i prefer those kind of easy to bend aluminum. not as weak as foil. epoxy is good though

I made some wood molds and then a bondo one. they are both good but it is hard to make a square bondo but easy to make a square wood one. Just cut out your shape and make it as exact as possible, that all there is to it.

XIFingerboards wrote:

I made some wood molds and then a bondo one. they are both good but it is hard to make a square bondo but easy to make a square wood one. Just cut out your shape and make it as exact as possible, that all there is to it.

i made a bondo and wood mold. the top is wood and the bottom bondo .i cut the size of the wood in the square and the shape i want and sand down the sides for concave, then i just use the wood to make a bondo bottom.

make a wood mold by cutting out a square of 2x4 the drawing the shape on the side the use a knife to cut into it, the take the bottom or top of the wood one and wrap cardboard around it make a bottom(or top) bondo mold the make a top(or bottom) bondo mold out of that one and hello you got a swuare bondo mold