jimbo

It won't help but I have visited the place and we did some trade with the company. A beautiful factory and very well run. Quite incredible watching the fuse being made. The machines were all made in-house and are a credit to the proprietors, you could eat your dinner off the floor. How sad - another British invention no longer made here. Martin and Martins are an excellent company though. A word of warning though - despite the excellent work practices here and wealth of experience and professionalism the company sufferred a terrible, fatal accident in the course of Blackpowder manufacture a few years back, after my visit. I know I will come across as a bit austere but these incidents serve as a reminder of the nature of the materials we are discussing.

Perhaps if you could tell me where the factory was I might be able to search for it on the web.

Thanks

Some interesting reading here -

HDPE Mortar Testing-
http://www.pyropage.....vs.steel2.html

Ron Lancaster at Kimbolton seems to back them up, and yet his company uses fibreglass. Perhaps the cheapness and avalibality of fibreglass has swayed their decisions ?