Reducing windows are a fundamental part of the vacuum forming process. It allows you to use smaller sheets of plastic to achieve a better yield, making the job more cost effective, reducing waste and helping to create a better end result by reducing webbing.
There are a few different types of reducing windows. Sheet metal reducing windows are usually a light weight solution and are produced in zinc plated mild steel, punched and folded to fit the machine. You can also use reducing windows made of fabricated steel or aluminum or a combination of the two materials.
Two of the most important issues with reducing windows are loss of vacuum and sheets pulling out. Reducing windows often need to be carefully set up in order to make sure that there is even clamping across the entire reducing window. Additional spacers should be used to provide even clamping.
There are more considerations for reducing windows, including:
- The best types of seals for reducing
- Advice for using base boards for reducing windows
- When to use masking windows
Formech outlines all of this and more here.
