Member postings for Gary Yeadon

I have used 2 grades years ago EN58 A & B. You can check if they are Austenitic by trying to add a Magnet. to the work piece

En58A and En58B are wrought steels used for mechanical and allied engineering purposes ¹. They have similar chemical compositions, but the difference lies in their mechanical propertiesEn58B has a higher tensile strength than En58A, but lower ductility ²³.

Here are some of the mechanical properties of both steels:

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Both steels are commonly used in the manufacture of shafts, gears, and axles ¹. Due to their high tensile strength and good ductility, they are also used in the production of fasteners, springs, and hand tools ¹. You can find more information about their chemical composition, mechanical properties, and cross-references in the datasheet available at ²³.

Electricity

Standing Charge Per Day - 51.48

Night - 16.31 p/kwh

Day - 35.33 p/kwh

Gas

Standing Charge Per Day 26.16 p/kwh

Dy/Night = 7.24 p/kwh

I must admit investment casting sprang into my mind that is one process to consider put forward earlier.

Another option would be 3d printing using a carbon fibre mix or use the file to fully machine from bar using a manual or CNC M/C you would need a file.

If you could send me scale drawing files I would draw up using my 3d software and send you the file foc

regards

Gary

Good Evening Steve - What are you using the fully machined item for please?

Regards

Gary

Just a thought if not already rejected create your bronze bearing sleeve in 2 stages:-

1. Press fit design OD from Limits and Fits leaving bore sllghtly undersize.

2. Once fitted to Housing Precision Bore/Ream to give Transition fit with shaft.

Has any modellers purchased an off the shelf for the above mini lathe?

I am in the process of getting my mini Lathe a CJ18A commissioned and am finding it difficult to Locate a stand for it.

I am a retired Lead Subsea Engineer and served my time with an indentured craft machinist working on centre lathes, capstan & turret lathes, horizontal and verticle milling machines, SBL's, cylindrical grinding machines and hydraulic presses.

I am a very keen oo gauge model railway enthusiast and intend reproducing the old tooling where possible.

I am also an avid speedway fan.