Munkul
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Wow thats extremely cheap even for 6 years ago!
- Thread starter Lewis_RX8
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Hood
I am obsessed.
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That is what I was thinking, I would have thought 3x that.
addjunkie
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The original quote was 12 ish, but by the time it was processed it had crept up a bit! It wasn't actually much more than an M300, bout 2 k.
Munkul
Jack of some trades, Master of none
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Wow. Theres a massive difference between an m300 and 400 in physical size and mass too, far bigger than the swing would suggest.
EXACTLY!
My Triumph was built in 1964.
Colchesters and Clausings are very popular in the USA as well. I doubt many Chinese machines will still be running after 50 years of hard use
addjunkie
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Harrison M300 Metal Lathe 635mm
The M300 Centre lathe is a full-function lathe capable of the entire range of turning operations, at home in vocational training or educational establishments.
www.technologysupplies.co.uk
They you go, not sure how upto date this is. Sure the prices vary depending who you are and how many you buy.
That's "breaking all the rules"...
prepman
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Thinking about it....the machines that make the machines, have advanced so much that the production costs have effectively reduced?Harrison M300 Metal Lathe 635mm
The M300 Centre lathe is a full-function lathe capable of the entire range of turning operations, at home in vocational training or educational establishments.
They you go, not sure how upto date this is. Sure the prices vary depending who you are and how many you buy.
Lewis_RX8
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But what about the machines that make the machines, that make the machines
prepman
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Sarah Connor broke them....but they're building machines to fix themBut what about the machines that make the machines, that make the machines
prepman
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Well..sigh.......After the wobbly revolting (sic) centre, plus a lucid moment of tranquility. I rechecked with test bar (which is getting decidely smaller in diameter) and the taper is insignificant. I can almost make difference zero, depending on touch of micrometer.
0.01mm maybe or less. Tailstock is now back in alignment. The last few 1/10ths were taxing.
So I will not be ripping the spindle apart any time soon. 20ltrs of Mannol iso 32 just arrived, the remnants of which will be used for my cremation
0.01mm maybe or less. Tailstock is now back in alignment. The last few 1/10ths were taxing.
So I will not be ripping the spindle apart any time soon. 20ltrs of Mannol iso 32 just arrived, the remnants of which will be used for my cremation
Lewis_RX8
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Need a lot of patience and persistence adjusting these old beasts , glad you got it sorted in the end. 0.01mm plenty good enough for anything I would be doing on itWell..sigh.......After the wobbly revolting (sic) centre, plus a lucid moment of tranquility. I rechecked with test bar (which is getting decidely smaller in diameter) and the taper is insignificant. I can almost make difference zero, depending on touch of micrometer.
0.01mm maybe or less. Tailstock is now back in alignment. The last few 1/10ths were taxing.
So I will not be ripping the spindle apart any time soon. 20ltrs of Mannol iso 32 just arrived, the remnants of which will be used for my cremation
Aaand then you'll need to turn a long taper so set it to one side.....Need a lot of patience and persistence adjusting these old beasts , glad you got it sorted in the end. 0.01mm plenty good enough for anything I would be doing on it
prepman
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Insomnia-R-us........As you no doubt now know, there is no headstock adjustment on the Mk1. The bed was precision scraped. A time consuming operation that Colchester got around by making the later models adjustable, according to Lathes + Machine Tool ArchiveNeed a lot of patience and persistence adjusting these old beasts , glad you got it sorted in the end. 0.01mm plenty good enough for anything I would be doing on it
Still can't fully understand what transpired. The adjustment to the bearings played some part. If there is too much play then the bearing will slump and not be centralised, which will cause the axis to angle downwards towards the tailstock, producing a reduced cut away from chuck . What happens to the rear bearing? Does it have springs or not. If not then it should slump and correct? Or does the front bearing act as fulcrum with the weight of the chuck and the rear rise? Arrgh! My brain's frying.
The vibration I had I've put down to minute swarf on the cone throwing the run-out. Cleaning got rid of the 0.8mm run out. That's the trouble, when your busy making stuff. I'd swapped to the 4 jaw for something, can't remember what and probably never will.
I've got some small bar magnets on order and will be driiling the drains plugs and then epoxy them in to pick up gear debris. https://www.ebay.co.uk/itm/132395304452
The right-hand rear selector is the noisy gear for high speed position. Is it the same on yours?
I digressed with the Colchester. Want to get back to ali welding with new advanced AC tig
Then on to designing a post knocker for my Kubota...I'll start a thread. Lot of posts to replace.
prepman
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I'll put it with all the others
addjunkie
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I have a Kubota too. Why reinvent the wheel. Buy used knocker, use and sell on…or keep as your new posts will only last 7 years or so.
There is a home built post knocker thread on here somewhere
Interesting stuff there on the headstock adjustment, I could never work out how it was adjustable, given the inverted vways go under the head. My old mk1 is rough as can be, but the bearings have never given me cause to question them. One day, I will strip it and get it ground end to end, until then it gets used.Insomnia-R-us........As you no doubt now know, there is no headstock adjustment on the Mk1. The bed was precision scraped. A time consuming operation that Colchester got around by making the later models adjustable, according to Lathes + Machine Tool Archive
Still can't fully understand what transpired. The adjustment to the bearings played some part. If there is too much play then the bearing will slump and not be centralised, which will cause the axis to angle downwards towards the tailstock, producing a reduced cut away from chuck . What happens to the rear bearing? Does it have springs or not. If not then it should slump and correct? Or does the front bearing act as fulcrum with the weight of the chuck and the rear rise? Arrgh! My brain's frying.
I've got some small bar magnets on order and will be driiling the drains plugs and then epoxy them in to pick up gear debris. https://www.ebay.co.uk/itm/132395304452
The right-hand rear selector is the noisy gear for high speed position. Is it the same on yours?
I digressed with the Colchester. Want to get back to ali welding with new advanced AC tig
Then on to designing a post knocker for my Kubota...I'll start a thread. Lot of posts to replace.
prepman
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At present I'm using the tractor frontloader to push them in. But as the front wheels lift, if there's an incline the front moves downhill and the post goes in angled. 3 point is a very unpractical alternative. So I wanted to makes something that would carry a magazine of stakes and an electrical (swivel) alignment. I was looking at something a little better than the hammer style instead, using a rotary action. Similar to the cement mixer I made. Plus I'd make one, haven't seen one at a realistic price. I will however have a quick look on eBay now. Nope nothing.
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