This is a simple guide to forming 90's on acrylic sheet,you can make curves and other shapes with the use of formers but im keeping this simple for the novice....which i am.
This is what you will need for this guide.
The plexi/acrylic of your choice
A heat gun.
A work bench or surface
A set of clamps and a clamping block to hold the workpiece in place.
![](http://i.imgur.com/pKMiq.jpg)
First up,line the edge of the worksurface with the line of your bend on the workpiece.
![](http://i.imgur.com/laBc0.jpg)
then place your clamping block in line with your chosen bend point.
![](http://i.imgur.com/lyZoC.jpg)
Select 'FULL POWAH' on your trusty heatgun..
![](http://i.imgur.com/HrfiE.jpg)
Then move along the bend line,i keep around 3" away fro the plexi and move very quickly back and forth.
![](http://i.imgur.com/JdSYt.jpg)
Push gently with your fingers until the workpiece lays flat at 90 then maintain pressure for a couple of minutes.
While the plexi is hot,it will have a springy property to it and will try to open up.
![](http://i.imgur.com/kSs1U.jpg)
You can tighten the 90 up even more using a former to push the acrylic down.
The end result is this..
![](http://i.imgur.com/huDnO.jpg)
![](http://i.imgur.com/ipw1W.jpg)
PSU covers or hide away panels are now easy to make.
You can tighten the 90 up even more using a former to push the acrylic down and in to the worktable.
Please do this kind of thing in a ventilated space,preferably outdoors,as gasses are released on heating of acrylic...you cant see or smell them but they are there.
Take fire precautions when using heat sources in this way.