This is a very simple fix that works quickly & permanently. You’ll need 3 tools for this.
- An aluminium speed square
- A heat gun
- A uniformly flat surface that can hold up to the heat from the heat gun
Step 1) Take the wide end of the speed square (the part meant to hook onto the piece being marked) & use it press the spacebar flat on your working surface.
Step 2) While using the speed square to hold down & flatten the warp out of the spacebar start blowing the hot air from the heat gun onto the exposed sides of the spacebar. Be sure to keep just enough pressure holding down to flatten out the warp throughout the heating.
Step 3) Once you have sufficiently heated the spacebar (it doesn’t take much I wouldn’t hit it with the heat gun for more than 30 sec.) shut the heat gun down, but continue to keep downward pressure on the spacebar until it has cooled sufficiently (about 1 1/2 to 2 min should be enough time). This is a very important step as letting the pressure of too early will result in the spacebar re-warping.
Step 4) Enjoy using a straight PBT spacebar!
While this is a pretty straight forward & common sense fix I figured I’d post it since I used this method to successfully fix a few spacebars from my PBT sets today. As long as you’re careful not to put too much downward pressure on the spacebar when heating & careful to not overheat it, this is a surefire way to quickly get any bad warps out of PBT spacebars!