The weather is not looking good for the weekend but I expect I will do some more. I managed to fix the heater and with the help of a hair dryer created a suitable environment for epoxy primer...
Some time ago I bought a sand blaster but I have been unable to stop it from clogging up, due I presume to dampness from the compressor. I have bought a new air filter so hopefully that will solve the problem. It should also help prevent micro blisters. One thing; it makes an awful mess. Filthy business. I always wear protective clothing with a mask and goggles; I also have a 5' square blasting booth... but after a while you can't see what you are doing!
This is an example of what I have been dealing with:
https://i.postimg.cc/Yq0zSdmd/IMG-0158.jpg
As I might have said; for what this lemon has cost I could have bought a decent Bristol. DOHH!