The Home Machinist!

ah...now you are into 'verification of position' on a machine, which is a whole science in itself -> not the least of which is room temperature control.

as CTM asks -> is this a hand cranker, stepper or servo machine?

good to hear on right track...or correct track?

any recommended gauge/thickness?

whatever you have and can cut....and twist....it really maters not...

i would NOT have them sticking OUT of the end of the flues inside the firebox.

yes..

long term stainless will last longer - but to prove a point.....

Half as**d or not, it will help. Some of the original industrial turbolaters were on gas fired vertical boilers, or water heaters. Absolutely no reason they shouldn't work.. The other option is a lot of small tubes in the vertical, which from a heat transfer perspective amounts to the same thing but...

What type of scale is it?

Glass or ???

agreed...but don't ask about monday's breakfast....

fuel injected?

don't remember anything about the springs...sorry...that was before breakfast .....40+ years ago. I am pretty sure we went with the standard, and when they sagged, stuck in the rubber bits and ran it that way for 20 years....it is just sitting now because of a boiler problem related to threading scr...

Ditto...at pressures 100's of times greater than seen on a loco

My wife has frequently accused me of not having perspective -> and computer graphics has confirmed it on more than one occasion. 🥴 There is a lot to be taken away from a basic design, drawing and layout class that used to be given to engineering students a half a century ago . Art students should al...

Sometimes the viewpoint and perspective get scrambled ..and the computer does exactly what you tell it to do.

Many of us whom have been there done that with Tich and Juliet models have benefitted from added weight between the frames in the form of blocks of lead. I seem to remember adding 4# of lead. Does not sound like much, but on a 25# loco. While you are making springs, a few that are 10-15% stiffer tha...