Onoff

Can I just clean out and fill these mortar gaps?

Well it could do with being a tad tighter but it won't come off in a strong blow:

Getting there. Hopefully fitting it in a bit:

& you've been caught!

Print in tpu.

More gone east than West then?

Big in Japan apparently.

Yes. Fit stainless screws and black screw caps. https://www.screwfix.com/p/timco-4-9ga-100-pack-black-plastic-screw-caps/378kf

Is that für ze tanks?

Fantastic! Can we see some more pics.....maybe close ups of the locks and security measures? 😉

You have absolutely no idea how close to the truth you are. Buildings either side of that street have seen a fair bit of Police activity over the years. For what you're getting at is a couple of streets over.

Butt welded:

Hasn't A4 80 roughly the same tensile strength as Gr8.8 mild steel?

I spy a huge box of tissues on the right... 😉

That's a good shout actually. I've a cable tray setter I made when at college, that might do it.

Thinking to fire up the plasma in the morning and cut a say 16" circle out of some thin stainless sheet I have here as a start. Maybe drag the torch round an old wheel rim. Thinking won't a flat plate be noisy in the rain? Is a conical cowl necessary? I've no method either of rolling a downturn/lip on said disc.

All I got from that was "hands free".

I know using stainless electrodes for electrolysis isn't a good idea as it produces toxic hexavalent chromium, Cr6+ at the anode. It does work mind as I've tried it.

Grade A2 nuts and bolts, by the sea, end up like a Swiss cheese. A4 is what you want.

Non working chimneys. Also considering making something like this:

The printer will only print 256x256x256mm. Don't think I haven't thought of it. Mulling on printing 4, slip together quadrants that I could form cement over.

I think it was @Jeremy Harris who used black uPVC board?

I need a couple of vented chimney cowls. Pot is 14" diameter. Any suggestions as to where, local roofing place ones are too small a diameter.

I actually thought about doing that and jumping one mains lead into the other.

The hole is presumably down through layers of different substrate. I've thought about this myself. Do you take out as much loose stuff as possible in the hope of bonding to the sides or undercut a bit more to make like a dovetail detail?