Straightening Bowed Plastic Sheets

I machined two tapered guide strips fron delrin plastic.

Straightening bowed plastic sheets.

Thank you randy remove 333 from email address to reply. I don t know how much time you have but you could try supporting it at either end and placing a weight in the middle. 1 1 4 wide tapered over 10 inches. How do i get rid of the bow.

Best i know of is trying to bow it the other way. Step 2 set the plywood sheet on a flat surface that has adequate exposure to warm air such as a paved driveway on a warm sunny day. The convex or humped side should face up and the side you sprayed. If you make sure the premade edge is straight and attach it there is a better chance that the 1 2 thick sheet will straighten out to match the straight edge.

The ends now bow up. I did machine all four sides to get them to size first. As with any project involving a heat source and the potential for melted plastic fumes please be careful. Lay the bait flat on a cookie sheet to let it dry for a few minutes and you re done.

It s possible to flip them and simply try and bow it back to straight. The combo of heating the entire plastic plus using weight really does a great job. Another straightening technique involves very hot water which has the advantage that so long as it is water versus steam it is unlikely to ever be so hot as to do damage to the plastic. Wrap your warped wood in two large moist towels and make sure the warped parts are properly covered.

If you stack one piece at a time the build up edge is going to bow with the sheet. Your once crooked soft plastic bait will now be straight and ready to fish. I use parchment paper to keep any debris from the cookie sheets from getting on my plastics. They taper fron 3 4 inch down to 1 8 inch.

Collectors often find bent parts on an action figure around the thinner areas of the toy such as the ankles or wrists. Very often accessories such as swords and guns which are usually long slender shapes molded out of a slightly softer plastic than the figures will also suffer greatly from bending. The concave part needs to face downwards. Most cheap bookshelves are made of mdf and will bow under the weight of the books after a while.

The concave area is the interior of the hump formed by the warping. When they are done i pull them out of the oven place another cookie sheet on top and then add some weight typically use four 30 packs of pop. Now keep your wrapped wood on a flat surface that also will be able to bear the temperature of your iron.