You meant 3M 5200 ?

If you do not play through your tube amp it is unlikely to blow the transformers or cause any damage as long as you turn the power and standby switches off after a few moments. I have many times turned my amps on and even turned up the volume knob and connected my guitar and strummed the strings only to hear silence. I checked and saw that I had not connected the speaker cables. I would shut down the amp immediately. Once the speaker cables had been connected I powered up my amp and was able to play-and never had any damage to any of my amps. My situation is that I have many tube amps and only one full stack of two 16 ohm 412 speaker cabs so I must remove the cables from the last amp I played through and then connect them to the present amp I wish to play through. I'm 74 and even though I am very careful, I have forgotten to connect the speaker cables at least 4 times in the last 8 years of so. I play every day and have been doing so for over a decade. I also must always be sure of the ohm selector switch settings on every amp every time I connect to a different amp as I do have other speakers and it's possible to select a different ohm range when I use the different speaker cabs two 2x12 cabs one is 4 ohms and the other is 8 ohms, and three 16 ohm 1x12 speaker cabs, which sometimes I use two 16ohm 1x12 cabs to make a single 8 ohm speaker cab set up. So I am saying accidents do happen and as long as a person acts quickly it is likely that no damage shall come to the tube amps. I do think that if you play very loud for a long time and you have not matched the cab ohms load to the power amp ohm output then yes you can blow a transformer or perhaps something else in your amp. So don't do that. Always match up the ohms of the speaker cabs total load to the correct tube power amp speaker output ohm load rating.

You mean West Systems gflex

I believe that flame treating this thickness of HDPE should work out quite well. The key to success is checking the wettability of the surface to determine if you've flame treated long enough. Just put a drop of water on the surface and tilt/try to move the droplet across the bonding area. If the water spreads/sheets across the surface without beading up you've treated it long enough.

Yeah it’s certainly not moving any buildings … yet!

We glued on a 3" pvc coupler with the Polywater Bonduit onto the end of an HDPE roll duct then dragged the 8' tall reel of the duct around the yard with a forklift to try and pull it off. It stayed on so we use it to couple HDPE roll pipe. 40,000 feet of 4" on that job.

Or PE Fusion acrylic adhesive

Nope. Whole different architecture. Kinda like using a Chevy transmission on a Ford.