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Calling all machinists

Posted by kyleborg 
Calling all machinists
January 20, 2019 07:04PM
Who has a machine shop (and time and skill) to help me with a project? I've got $5,000 I can pay someone to start.

The long-winded description is below, email me if you are interested. kyleborghini@gmail.com



Pressure vessel (13 lbs steam storage).
Comprises:
7" OD / 4" ID stainless steel pipe, capped/plugged at both ends. Length about 2 feet. Not much machining required but its freakin heavy.


4 cubic inch Engine.
Comprises:
Predator 212 bottom end and cylinder (used as crosshead). Crank stroke is 2.16".
Cast iron (machined) steam cylinder, 3.5" OD iron bar stock, having a 1.1" or 1.5" dia piston (depending if double-acting or single uniflow, tbd).
Mounster cylinder head(s) - Tom Kimmel has the castings.
The heads, steam cylinder, valve(s), etc will be machined to Mounster blueprints.


Engine will be 4 cid and use 13 lbs/hr (steam conditions are 2500psi/995F).

I'll supply all materials, you do the machining.

This will be built as a one-shot device for some quick testing and nothing more.
I won't be condensing the steam or doing anything to make the engine useable in, eg., a car.
It will have a fixed cutoff (about 4%) and just one cam profile.

I have investors standing by with contracts If I can get the engine to produce 6 HP or more.

Who wants to help?



Edited 3 time(s). Last edit at 01/23/2019 10:08AM by kyleborg.
Re: Calling all machinists
January 24, 2019 08:41PM
The best place to start with custom CAD 3D model and assy drawings. Where your going to run into problems is that the the machinist will like to make a large batch say one hundred of each piece.

At least if you have drawings, you can shop around.
Re: Calling all machinists
January 29, 2019 04:59PM
I have the Mounster blueprints (from the SACA archives) for the steam cylinder/head. There isn't much to do other than those things. And, I'd much rather have an experienced steam club person do the machining, rather than some super high tech machine shop that doesn't know the first thing about steam.
Re: Calling all machinists
January 29, 2019 05:47PM
Ok I will try to post again...

The final say is fit and function. this falls with the operator and designer. I have ALOT of parts but I just take the part and do final machining. I have "blanks" that require final machining and is done "in house".
Re: Calling all machinists
January 31, 2019 12:23PM
Thanks for the info Jeremy. But I don't quite understand the meaning of it. Perhaps you mean any old shop can machine something, but making it all work really falls to 1). the designer and 2). the operator. ??? I guess I would be considered the designer and operator. So I just need to find a competent machinist. spinning smiley sticking its tongue out
Re: Calling all machinists
January 31, 2019 01:37PM
I'm in the process of moving my shop right now and may be able to help you with this in two or three weeks. I do all types of machining etc, but I don't do any type of boiler work.

-Ron
Re: Calling all machinists
January 31, 2019 04:41PM
Hi Kyleborg,

Quote
Kyle
all work really falls to 1). the designer and 2). the operator. ??? I guess I would be considered the designer and operator.

this rule comes from any steam code. For example being the operator without understand limits. I have read quite a few boiler operator prep guide. They will discuss things like "boiler trim" .

That considered steam automobiles, do not generally require a certified operator, but it is very good to have intimate knowledge as a whole.

Even so, as per other threads the boiler is a critical part of a complete engine assy. based on engine design the boiler and the engine must be properly matched.

Alot of people use compressed air to dynamically test new engines.

Mono tube heat exchanger is notoriously difficult to control. But it has been done many times.

Running such a system (thermodynamics) is key aswell the the construction.

Feel free to ask more questions smiling smiley
Re: Calling all machinists
January 31, 2019 04:44PM
Ron thanks for the reply. I won't be building a boiler, those things are a mystery to me. Most of the work is just the Mounster cylinder head. I'm trying to get a set of castings from Tom K but he's been too busy to mess with me lol

Let's keep in touch

- Kyle B
Re: Calling all machinists
January 31, 2019 04:47PM
Jeremy thank you. You can bet I'll have more questions, you guys are much more knowledgeable than me.
I plan on being at the Spring meet in March, I'll bring my questions with me winking smiley

Cheers

- Kyle B
Re: Calling all machinists
January 31, 2019 05:45PM
Kyle,

Sounds good. Let me know.

-Ron
Re: Calling all machinists
February 15, 2019 09:28PM
Hey Ron, could you give me an idea whereabouts you are located? I have 4 addresses - in TX, AR, KY and MT.
I'm acquiring raw materials and I think it would be best if I had them shipped to the address of mine that is nearest to you so I have less re-shipping to do.

Cheers,

Kyle B
Re: Calling all machinists
February 17, 2019 03:50AM
Hi Kyle,
A gentle correction, the Mini Meet as we call it, this will be the first weekend in May. May 4-5, 2019 at Tom's shop as you have referred to him before. I'm going to the meet and can bring reasonable sized materials to Ron if you would like. I drive by Ron on my way to Western Michigan from upstate NY (Finger Lakes area).

There's another guy, Tony, he might be willing to help also.

Looking forward to meet you and shooting off steam smiling smiley

Kind regards,
Rick
Re: Calling all machinists
February 17, 2019 08:17AM
Kyle,

I'm in Detroit. Let me know.

-Ron
Re: Calling all machinists
February 18, 2019 07:52PM
Hi Rick, thanks for the info. I intend to be at the Mini Meet. Hopefully I'll get my engine built before then.

- Kyle
Re: Calling all machinists
February 18, 2019 07:58PM
IronChief Wrote:
-------------------------------------------------------
> Kyle,
>
> I'm in Detroit. Let me know.
>
> -Ron


Hi Ron,

I should have all my raw materials by the end of the month so I'll give you a shout when I'm ready to go.

- Kyle
Re: Calling all machinists
February 19, 2019 04:41PM
Kyle.

Sounds good, let me know.

Just a heads up on how I may be able to help.

I have CNC mill, CNC lathe, MIG, TIG, Arc welding capabilities, torch brazing. silver soldering. 3D modeling and surfacing, engraving etc. I'm the Swiss army knife of machinists smiling smiley

I don't do any pressure vessel welding though, I can machine components for weld prep and I am familiar with the ASME boiler code. in regard to construction technique and material selection.

-Ron
Re: Calling all machinists
February 22, 2019 08:43PM
Hi Ron,

I estimate that 80% of the job will be machining the Mounster cylinder head casting to blueprint specs. Tom K has both the heads and the blueprints. The blueprints are paper and the CNC lathe runs off a digital data file. I wouldn't have the first clue how to convert one into the other. Any ideas?

- Kyle



IronChief Wrote:
-------------------------------------------------------

> I have CNC mill, CNC lathe, MIG, TIG, Arc welding
> capabilities, torch brazing. silver soldering. 3D
> modeling and surfacing, engraving etc. I'm the
> Swiss army knife of machinists smiling smiley
>

> -Ron
Re: Calling all machinists
February 23, 2019 07:59AM
Quote: "The blueprints are paper and the CNC lathe runs off a digital data file. I wouldn't have the first clue how to convert one into the other. Any ideas?"

Not sure what you mean exactly. There are prints and G-code (digital data?) for the same parts? I really only need the drawings of the parts - and the castings of course. Typically the G-code is unusable from one controller/interpreter to the next and involves so much editing it isn't worth it, just make new code. Lots of flavors of Gcode out there, for instance a good CAM program will have at least a hundred different post processors (Config file to format the correct code for a corresponding controller). The chance of finding a random code that will work with a particular controller is pretty rare. One trick that can be done is strip the initialization strings out and then load the code up on the CAM side and the software has the ability to work backwards and draw the part on screen from the machine commands. Then the old code is deleted and new code is created.

The workflow is CAD to CAM to CNC. Typically any job I receive is simply drawings/prints. Then I redraw them in the CAD software. Once the lines are on the screen, the CAM side can use those lines to generate G-code/machine commands. Then that is loaded up on the CNC controller, the job set up and ran. With all the computer help, it still comes down to knowing how to plan the machining strategy and proper job set up.

-Ron
Re: Calling all machinists
February 23, 2019 09:38AM
Ron
Some printing Co can scan paper drawings into cad format.
I do not know all the particulars involved but I know it’s been done. You may have to scan them into one format and then convert them into another.
Rolly
Re: Calling all machinists
February 23, 2019 10:31AM
Rolly,

Yes, there are different ways to get around drawing the part in Cad, unfortunately that commits one of the cardinal sins of machining "Never scale a drawing". One should work from the dimensions only. Scanning a drawing where the lines are varying width, it would be impossible to achieve any sort of accuracy under .030" etc.

It fits the old adages where trying to get out of doing something is more work than the original task.

Once familiar with a decent CAD program, simple parts can be drawn in just a few minutes, keep in mind, all the machinist needs is the lines, the drawing doesn't need dimensions, titleblocks and text etc for G-code generation, just the lines and points.

-Ron
Re: Calling all machinists
February 23, 2019 12:09PM
This is why I use Solidworks, I had some parts made a year or two back, I just sent them the files and they made the parts. Im not sure who mentioned another cad program that was cheaper.

It took me years to catch up to the learning curve.

Kyleborg if you have the drawings you will need to copy and draw them.

Does that sound right
Re: Calling all machinists
February 23, 2019 07:18PM
Quote

Quote: "The blueprints are paper and the CNC lathe runs off a digital data file. I wouldn't have the first clue how to convert one into the other. Any ideas?"

Not sure what you mean exactly. There are prints and G-code (digital data?) for the same parts? I really only need the drawings of the parts - and the castings of course.



Hi Ron,

I meant that I have paper blueprints and the CNC machine requires G-code, so I was confused.

Your answer cleared everything up completely.

Would you care to communicate by email? If you email me at kyleborghini@gmail.com I can send you the (PDF) blueprints I have and you'll be able to see what's ahead.

Regards,

Kyle B
Re: Calling all machinists
February 23, 2019 07:38PM
Kyle.

Will do

-Ron
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