- Thread starter Kram
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Indeed so. Can I have one pleaseThat's just a big Chinese mini lathe
daedalusminos
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That looks remarkably like a Harrison M300
Lewis_RX8
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That's just a big Chinese mini lathe
Never turned on anything else so nothing to compare to , yet
Brad93
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It is. Colchester bought harrison. 600 group then moved production to Taiwan. Hence why XYZ lathes look practically Identical too.
Brad93
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They probably work just as good. The Taiwanese got pretty good at making lathes.Never turned on anything else so nothing to compare to , yet
Taiwan have been making good lathes for many years. They would NOT be amused to be called Chinese!
I have a Feeler lathe which they say is just as good - if not better - than the Hardinge it was copied from.
Brad93
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Well I don't think they would mind since their official name is Republic Of China.
Lol it gets very messy!
They are the true Chinese - or Free Chinese as they like to be called
daedalusminos
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That explains it...
The 'new' Colchester Student 2500:
The 'new' Harrison M300:
The 'new' Colchester Student 2500:
The 'new' Harrison M300:
Did you single point the male thread or use a die?
Pete.
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I didn't have a die that size but the guy did so I single pointed it to about 90% depth and finished it with his die.
Brad93
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Yep, sad really. The lifetime cost and carbon footprint of a 70s/80s colchester that has had a rebuild after 30 years is so low. Compare it to polluting chinese industry, an old lathe rebuilt is practically a environmental success story.
Look at that cutting edge engineering on youtube, ever machine in his shop is chinese. I guess he isn't a precision machinist he is just using his machines to repair plant, but still, Sad.
Hood
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On my CNC when I am doing the hauler plates I have it flooded. Cast cuts great dry but is also fine wet so I do that as it keeps the mess down and is easier to clean up. I have a fine filter on the coolant so anything that gets back to the tank gets filtered out.
Only thing is if cutting wet you definitely have to clean up or it sets like concrete and is a real pain to remove afterwards
Only thing is if cutting wet you definitely have to clean up or it sets like concrete and is a real pain to remove afterwards
Learn something new every day - I didn't know you could use coolant for cast iron.On my CNC when I am doing the hauler plates I have it flooded. Cast cuts great dry but is also fine wet so I do that as it keeps the mess down and is easier to clean up. I have a fine filter on the coolant so anything that gets back to the tank gets filtered out.
Only thing is if cutting wet you definitely have to clean up or it sets like concrete and is a real pain to remove afterwards
Hood
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Weird one today. Was asked to make a cap for a pipe which is used for the drinking water filler on a big Cat.
Couldn't really get in to see exactly what the thread was but it was measuring 43.89mm on the OD and the thread gauges were 2.5mm pitch or 10TPI.
I was thinking either 44mm x 2.5 pitch or 1.75" x 10tpi
Couldn't find anything to match in thread charts so just had to give it a go and luckily it fitted
Shame I only had white Acetal big enough as it can't be kept clean in my hands Then again it is not going to stay white on a fishing boat for long anyway.
Couldn't really get in to see exactly what the thread was but it was measuring 43.89mm on the OD and the thread gauges were 2.5mm pitch or 10TPI.
I was thinking either 44mm x 2.5 pitch or 1.75" x 10tpi
Couldn't find anything to match in thread charts so just had to give it a go and luckily it fitted
Shame I only had white Acetal big enough as it can't be kept clean in my hands
Then again it is not going to stay white on a fishing boat for long anyway.
Kram
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I decided to use aluminium for the outside vent as I have plenty and an AC tig I need practise with. First thing was to find a radius form tool as I dont have a ball turner yet. 1/4" radius tool, makes a big chip and there was no chance of turning it under power, it was starting to chatter just by hand.
Flipped it over with plenty of plastic wrap protection and bored out to 42mm. Finishing my tea then I'll turn the OD and might part a bit off, its a bit long.
Flipped it over with plenty of plastic wrap protection and bored out to 42mm. Finishing my tea then I'll turn the OD and might part a bit off, its a bit long.
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