HOW
TO CARE FOR PERSPEX
Important: Perspex is prone to crazing
if misused.
- Do not use countersunk screws, the wedge is pulled up tight putting the material under great stress, eventually the Perspex will crack.
- To minimise stress on the Perspex if the hull/superstructure is to be curved use the thinnest practical sheet as the Perspex is put under great strain as it is pulled out. If it is a very tight curve it is advisable to have the windows formed to the correct curvature, thus preventing crazing which sometimes happens when the material is greatly stressed.
- To minimise the likely hood of chipping regrind your drill (if you have grinding facilities) to zero rake so that it "scrapes through" rather than cutting, as a chip provides a point for "crack propagation", which will take place very quickly when bolted up.
- Do not over tighten screws/bolts.
- To avoid scratching the surface of your windows do not wipe when dry, keep your windows clean with warm soapy water.
