Member postings for Michael Cooper 5

I’ve never fitted a DRO, so I’m probably talking a load of cobblers, but is it possible the track has been fitted 180 deg out( backwards /. Upside down/ etc)

I’m getting 109.5 deg, for your 161 .Definitely try it on paper before you take my word for it lol.Good luck Don

Fair enough Phil,it’s really the iron carbon phase equilibrium diagram, I just posted “steel” because when googled it showed the full diagram where cast iron started at just over 2%

Thanks Rod,maybe that’s what it was.Wouldn’t have been the only thing misappropriated by MoD apprentices. The beauty of cost-codes.

Fair enough fellas you win lol.Just thought it was worth mentioning if the guy is just staring out.

Oh, and more importantly, No long hair, loose sleeves, ties , gloves etc and put your Google’s on 👍

I would first learn about feeds and speeds and tool geometry and stick to HSS to start with and understand the strength of your tool.Old British tooling was roughly based around the ability to remove a cubic inch per horsepower per minute, bearing in mind they were made out of the correct cast iron which was very stiff.But to become a craftsman your not allowed any electricity bar a pillar drill for the first 6 months.You will spend A week scraping and blueing a flat surface 4” square.My point is you don’t need to to do an apprenticeship to make great models.The advice I see in these comments is as good as any and no one knows it all👍

Thanks Rod. I used this in MoD workshops in the 80’s so it could have been from any era knowing their stores.Thanks for the heads up about luting, I never new the word existed till now.

Thanks Robin,that makes a lot of sense.Learnt more on this site in 24 hrs than I have in last 10 years.Thanks again 👍

When I was an apprentice we used a type of black putty that we moulded onto our machine tools making little dams etc to guide any wayward coolant back to the suds tray.I think it was called “looting”.Does anyone know if it still exists or if there’s a modern equivalent.Thanks

Phase equilibrium diagram for steel

If you type into google “phase equilibrium diagrams” it will show you how carbon content changes the steel into cast iron .And if you learn to read it it’s good for heat treating temps

Hi Jon,I was at Proof and Experimental Establishment at Shoeburyness,but did the first year with the REME at 36 District Workshop in Colchester.Before all the privatisation of course.Must have been very interesting at your end flying all those kites 👍

Been a single parent for the last 10 years but the kids are getting old enough now for me to start pursuing some of my own interests.I’m going back down the shed.Served an MOD apprenticeship many years ago in the 80’s and loved it.Great site here and massive amount of knowledge.Going to try and de-rust myself.Thanks for letting me join

Oh, my apologies,I didn’t know the Myford had this limitation on its compound slide.Thanks for the Lesson 👍

When cutting threads the basic set up should go something like set the compound slide to half inclusive angle.Set dial on compound to zero.If possible turn a root diameter at either the start or exit of the thread using cross slide.When the root diameter is achieved set cross slide to zero.Clear tool from work by backing off just enough using compound slide.Select RPM and touch on work using only the compound slide.Wind down the bed till your of your work.Set your first cut on compound and and chose a number on your chaser dial and engage.At end of each pass(remember to disengage) clear work using cross slide and wind down bed past the work to the beginning.Wind in cross slide to zero , put cut on compound slide and engage on same number.Repeat until compound reads zero.I would set up like jasonB as it cleans up trailing face nice.