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Thanks, everyone some good ideas here. Just to clarify, the vertical lip will be on the inside. I'm putting this on the back burner for the Christmas period, I'll get back to it in the new year. Merry Christmas. Ray

Thanks Jasonb: that's what I was thinking.

I have some 1/2" x 1/2" x 1/8" brass angle I need to bend into a 6" circle, it will be silver soldered at the join. I have tried bending it around a form without much success It twists and the worst part is that the 90 degree angle decreases by several degrees, this is not good for what I need...

And was Jerusalem builded here, Among these dark Satanic Mills?

Chocolate Milk?

Thanks, Ken, for sure I am going to run at least one coal fire, probably more. I grew up in the steam train era, as probably you did also. Wallsend is just south of the Newcastle to Edinburgh line and remember seeing the trains flying along, smoke, fire steam, and great noise, every schoolboy...

Do you have anything with an MT2 taper? Set it up between centres and indicate from the compound.

Here's my baby running on compressed air. This is the blub from the PM Research website This is not a scaled-down model, but a full-size working steam engine. It is a replica of a rare old steam engine used for various small portable power applications a century ago. This engine was sold as a...

Here's what I'm proposing to do, a ring of copper soldered around the door between the inner and outer wrapper. Probably hold it in place with screws until it gets soldered..

If I were to go with 4 superheater tubes would they be connected in parallel or in series?

That may be difficult to get if at all, the thickest I've seen is 16 gauge 1.6mm. I have a book by Alex Wiess "Making Small Gas Fired Boilers for Steam Models" in which he uses 1.6mm copper for everything. I can get 10ga for the main boiler tube and the firebox as well as the tube plates.

What I did with my Minilathe, I welded together a couple of 2" x 3" steel beams, got them as flat as I could, then poured epoxy where the lathe feet would be and placed the lathe in position, not bolting it down yet. When the epoxy had cured I bolted the feet down. I used anchoring epoxy, it...

I think I'm sticking with the original plans, 55 7/16" flues. The only deviation, at the moment, is to use an oval firebox door after reading of failures with rectangular openings. I do like the idea of a superheater whether smokebox or firebox, I didn't quite understand tenor's description of...

Is that a casting kit or from scratch?

I have heard back from one of my local model railway contacts. According to him, although he will deny it in a court of law, boilers below a certain size 10" and pressure 100psi do not need to follow any regulations. As Steamchick put it, "you are free to build your own bomb". I'm still...

Actually, I'm basing my calculations on running at 60psi, real-time results may vary.

That was just a copy-and-paste from the spreadsheet that Quinn Dunki "Blondihacks" produced, available to her Patrons on YouTube for a small monthly donation. I don't feel comfortable sharing without her blessing. Sorry Ray

Welcome Jonathan from Canada, but originally from Tyneside.

Steamchick, thank you for taking the time to teach this old Geordie a few things about boilers and requirements. I like how you are making sure that I build a SAFE boiler. After much soul-searching, I have a few options I think. 1. Give up, not happening. 2. Use a round firehole, it seems that...

Macc Models have 1/8" 3.175mm 6" and 5" tube that I was planning on using. Certainly a lot to think about.