I setup my acrylic 'moulding jig'.
I need to create acrylic cylinders for my air intake ducts.
The idea is to work the acrylic with a heat gun while the piece rests on a cylinder template and to push the acrylic forward when it gradually bends to take shape of the template.
The upright piece of wood helps to keep the piece perpendicular to the cylinder template - I need the two ends to mate correctly.
So what the hell happened? The acrylic is RISING!
I wanted to see what would happen if I did not remove the protective film before applying heat to the piece (
The film did not melt into a goo but is started to shrink which caused the acrylic to be pulled up! Well now I know
I removed the film and continued...
OK, I was unable to find suitable metal cylinder/pipe to act as a template so I got some plumbing stuff.
Sure its plastic but it is much tougher than acrylic so I did not expected to be affected by heat so quickly.
I was wrong. The 'template' started to loose it 'integrity' and I had to stop.
I will now look for metal substitute.
Look out for 'Acrylic Moulding Jig rev A'