Lyn St George

I should add that I had no idea that extremtextil’s current tpu fabric is different to the lot from 5 years ago, and it was only discovered when testing to find the right temperature for the new tool. In the end I had to abandon that project and write off the money and time spent on it. This was hugely irritating, but even though these were going…[Read more]

OK, I’ve just seen that post and added one for the iron I’m using. The original 70den/170gsm tpu fabric I bought 5 years ago from extremextil welds very well at a temp of around 280C, but the new lot just melts at anything more than about 160.

It seems to me that anything extremtextil do not list as “high-tenacity 6.6” is only “nylon 6”. Matt…[Read more]

The soldering iron I have is this: ebay 58w iron, very cheap but effective.

It uses solid tips of 6mm diameter and I made a welding shoe from heavy copper tube, hammered flat and smoothed off to 11mm width. Having seen the clover iron I have bought a large shoe and will soon add a set screw to the iron heater to hold the clover shoe in place.…[Read more]

This is interesting. I also got some of their 40den/70gsm fabric, as at the time I intended making two sleeping mats: one from 70den and one from the 40den.

Before starting I made test strips 2cm wide and welded them together at different temperatures. I am now using a converted soldering iron with temp control from 150C to 450C, and a shoe 11mm…[Read more]

It seems that Extremtextil get in different lots but list them under the same description. About 5 years ago I got some 70den/170gsm tpu nylon to make a sleeping mat, and it heat welded fine. A couple of months ago I got another lot, listed with the same desription, but it just melted when it should have welded. I assume this is the difference…[Read more]