have you looked at plumbers' soldering heat mats?

**LINK**

(Other retailers are available &nbsp

Fibre glass mat sold as a plumber's heat insulating mat foe soldering in awkward spaces?

I've got one about 6 ins by 8 ins, comes with a sewn border to stop it unravelling. I bought from my local builders merchant

(edit – several people type faster 'n me!)

Edited By Simon Williams 3 on 06/07/2017 15:07:57

I use a themally reflective sheet under my heated bed, as suggested on the Richrap blog

About £1.00 for 3 x 35 x 20cm sheets

Edited By Zebethyal on 06/07/2017 16:03:43

You don't need high temperature resistance so fireproof blankets are a bit OTT. I use a couple of layers of aluminised bubblewrap that came free as packing for something. It has good insulating and reflecting properties and doesn't melt.

I also add a sheet of it on the top of the bed while it's heating up. It roughly halves the heat up time.

Russell.

British equivalent of Harbor freight has welding blankets, leaving extra for other uses.

Last time I was at the supermarket the kitchenware department had some heatproof silicone oven mats about that size. No idea what they are used for in the kitchen but I thought at the time they might be a handy workshop item.