Author Topic: Bar-stock "Mary"  (Read 3503 times)

Offline joe d

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Bar-stock "Mary"
« on: December 15, 2020, 03:42:17 AM »
Well, it's been quite a while since I've posted a project.  With a fair amount of shop time available these days I decided to get going on Tubal Cain's MARY,
with the additional challenge of doing it all from bar stock. The only things I've bought in for the project are some scale nuts, so far everything else has come from stock in hand.

I have changed all the fasteners & threads to UNC or UNF, much simpler than sourcing a bunch of BA stuff here in Canada.

Started at the beginning of July, so will post retrospective stuff until I catch up to present... so don't go thinking that I work at the speed of a Lombard & Man Wagon builder :ROFL:

Will be back with some photos as soon as I figure out how to insert them from coppermine...

Cheers, Joe



« Last Edit: February 01, 2021, 03:53:26 AM by joe d »

Offline joe d

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Re: Bar-stock "Mary"
« Reply #1 on: December 15, 2020, 03:46:53 AM »
Hmmm... picture attached after all, not at all sure how I did that. It was the first bit I started with, turned an off-centre chucking spigot for the cylinder.

Joe

Offline Ramon

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Re: Bar-stock "Mary"
« Reply #2 on: December 15, 2020, 11:29:17 AM »
Hello Joe

It's good to see someone tackling this rather attractive beam engine. I've long had thoughts to do similar but at a third bigger - Mary's big sister! - but though the drawings (in TC's book) are now annotated as such I've never actually got round to it.

I have another project to begin shortly so shall enjoy watching yours progress instead.

I'm not sure if memory serves correct but many (and I do mean many!) years ago I recall buying an American(?) publication somewhere on my travels. Not sure of the exact name (it was something like 'Popular Mechanics') but I do remember it was of horizontal format and quite thick with many varying and interesting hobby projects inside.

There was a beam engine project included and I'm pretty sure it was 'Mary' - this would be long long before I became aware of it over here in the UK.

Just a memory but wish I still had the magazine

Good luck with your engine  :ThumbsUp:

Tug
"I ain't here for the long time but I am here for a good time"
(a very apt phrase - thanks to a well meaning MEM friend)

Offline joe d

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Re: Bar-stock "Mary"
« Reply #3 on: December 15, 2020, 11:59:47 PM »
Tug:  Thanks for looking in.  I've much enjoyed following various of your projects here.

Going along: Used the chucking spigot to hold the work and bore the cylinder,


then turned a mandrel and mounted it on the mill with the dividing head and commenced to mill away everything that didn't look like a cylinder.


 The rough stock had just enough meat to allow for the platform that the valve chest mounts on.


 Lots of round-n-round & back & forth but came out OK.



Joe
« Last Edit: February 01, 2021, 04:01:29 AM by joe d »

Offline Bear

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Re: Bar-stock "Mary"
« Reply #4 on: December 16, 2020, 12:37:33 AM »
Subscribed. I am also interested in the identity of your lathe, and is that a Taig mill?

Offline joe d

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Re: Bar-stock "Mary"
« Reply #5 on: December 16, 2020, 01:00:35 AM »
Hi Bear

The large lathe is a B2227L Craftex from Busy Bee, 10 x 18 screw cutting, another variant of Chinese manufacture, it has served me well to date.
Also have a Taig lathe, my first, and it still gets a fair amount of use, and yes, it's a Taig mill. Would love to upgrade to some big hunking "real" mill, but have no room for one!

Joe

Offline Bear

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Re: Bar-stock "Mary"
« Reply #6 on: December 16, 2020, 03:23:41 AM »
Joe, I also have a Taig lathe and mill. I like the mill, and it is a good size for model making. The same goes for the lathe. In any event, I wish I had the room for a Bridgeport  ;D.

Offline Jasonb

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Re: Bar-stock "Mary"
« Reply #7 on: December 16, 2020, 07:24:10 AM »
Anyone else not able to get the last set of images up to a decent size, they seem to be thumbnails not "normal" size as the first

Will also be looking in to see this one progress.

Offline MJM460

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Re: Bar-stock "Mary"
« Reply #8 on: December 16, 2020, 11:26:38 AM »
Same here Jason.  However the file name suggests that it is the thumbnail that was posted rather than just a smaller file size. 

I am sure that Joe will soon work it out.

MJM460
The more I learn, the more I find that I still have to learn!

Offline gary.a.ayres

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Re: Bar-stock "Mary"
« Reply #9 on: December 16, 2020, 01:46:12 PM »
Yes, Joe appears to have posted thumbnails.

This will be an interesting build.

Following...

Offline joe d

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Re: Bar-stock "Mary"
« Reply #10 on: December 16, 2020, 08:36:04 PM »
Try again... same images at a reasonable size (I Hope)

Offline Admiral_dk

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Re: Bar-stock "Mary"
« Reply #11 on: December 16, 2020, 10:28:31 PM »
I personally love to see them even bigger - but it is a true improvement - when I click on them now I get the 400x300 size  :ThumbsUp:

Offline joe d

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Re: Bar-stock "Mary"
« Reply #12 on: December 17, 2020, 03:56:20 PM »
Hi all.
Jason, MJM, Gary & Admiral ... I seem to have sorted the photo issue, thanks for looking in.

Used my rather low-end tilting vise to hold the cylinder for drilling the steam passages. 


Turned the cylinder covers, then used the indexing head
to drill the bolt circles at tapping size


used the covers as drill guides on the cylinder, then opened them out to clearance size holes.


Put the cylinder in a small vice and used the UPT for tapping the holes.


Cheers, Joe
« Last Edit: February 01, 2021, 04:07:10 AM by joe d »

Offline steve-de24

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Re: Bar-stock "Mary"
« Reply #13 on: December 17, 2020, 08:59:12 PM »
I've always thought this was a very nicely proportioned engine. I look forward to seeing you build it.
Steve

Offline Bear

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Re: Bar-stock "Mary"
« Reply #14 on: December 17, 2020, 11:08:24 PM »
Nice set-ups.