Engines > From Plans
Potty Simpson build - MZT
Bogstandard:
Marcello,
Even though you are making it from some unknownium, you should really class anything like this as barstock.
That sure is some lump you've started off with there, and that is one of our secrets. We can see what we want in that big lump or twisted bit of metal.
John
mzt:
Proper tools make a difference
And what a difference they make!
I had started the previous cut using the 24tpi frame: all the teeth were still there, but they had already faced hours of activities.
Not being entirely convinced I?d have brought the job to completion, there was no point into wasting shop time looking for a new blade, nor I wanted to risk one of the precious coarse ones.
By the time I got ?convinced?, I had already grooved the four faces: no place to start a new cut,
had to go on with what I had used before. You don?t want use a new blade into an old cut, You know.
On this occasion, I decided to risk using the 18tpi frame*, knowing it had only faced little use on aluminium.
Even took the risk of cutting closer to the scribed line: You really need to make it all wrong to get a wandering cut into C.I.
Putting the ?difference? into numbers, this job was done in 22 minutes.
Marcello
(*) Yep! Some years ago I bought myself three identical frames, to put an end to the repeated blade changes, to suit the job at hand.
I wish I had purchased quality ones.
mzt:
Simon,
I don't think I will get it anywhere close to a "diamond" however high the carbon contents in it, :shrug:
Neither sure it will be a runner, and that would be prize enough for me.
Plenty of room for screwups on that cylinder, yet: I really wish I had already cut the next step or two.
Will do, in due time: I really need to tackle them with no distractions, and a couple of engines close to the "final test" are no help.
Marcello
swilliams:
Looks like you're doing a fine job there Marcello. The best way to get a runner is to have a go just like you're doing, you'll get there
Cheers
Steve
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