Reconditioning & fitting a collet chuck to a Colchester Student lathe

Reconditioning & fitting a collet chuck to a Colchester Student lathe - part 4

Рет қаралды 1,554

Күн бұрын

Пікірлер: 28

@willemvantsant5105 3 ай бұрын

Hi Clive, striving for perfection can be soul destroying. The complex design of the collet Chuck has many variables to achieve zero runout but you got it close enough to put it in service.

@Workshopfriend 3 ай бұрын

Thanks, Willem. I think if I hadn't drawn a temporary line under this here (as a video project) it could have become frustrating.

@willemvantsant5105 3 ай бұрын

My opinion on the Collet Closer was designed for fast production work, the bar stock fed in, machined, parted off, and bar stock fed in again where runout was not a critical consideration. The balls will always indent the mating surfaces causing minor runout, not a problem for production work as long as the work is securely held.

@Workshopfriend 3 ай бұрын

I think you are right! Essentially a different tool from the key operated collet chuck.

@eyuptony 3 ай бұрын

Excellent, first class fault finding elimination, bit by bit. The run out was unbelievable, especially on a beaten up L0 lathe nose like yours. Top job...Cheers Tony.....

@Workshopfriend 3 ай бұрын

Thanks, Tony. In between other jobs I will be looking at improving the nose taper.

@andrewdolinskiatcarpathian 3 ай бұрын

Hi Clive. Your meticulous approach and patience was well rewarded. We have all been guilty of chasing our tails, especially when an error is often the sum of many variables. Ver6 interesting indeed. As for the forthcoming series ……. Definitely of interest as parting off is my nemesis 🥴

@Workshopfriend 3 ай бұрын

Many thanks, Andrew. I can safely say that parting off has greatly improved as a result of the series to come!

@andrewdolinskiatcarpathian 3 ай бұрын

@@Workshopfriend Ohh, even more reason to watch the new series. 👏👏

@jeffbarrett1787 Ай бұрын

Hi Clive, thanks for sharing I’m learning all the time thanks to you and people like you for giving your time. Appreciate what you do.

@Workshopfriend Ай бұрын

Thanks, Jeff, for your encouraging feedback!

@jeffbarrett1787 Ай бұрын

@ thank you, I’m still watching videos very interesting and educational

@seamusbolton215 3 ай бұрын

I tested my own Burnerd collet chuck on a 50+ year old student after watching your last video and was getting run out of of 0.03mm I blued up the spindle nose and stoned for high spots and it came back to 0.01mm which is amazing when you consider age and how it spent 20+ years in a training college The chuck I have is the standard and not the lever type, but you can feel the quality when you handle it Thanks again for all your efforts

@Workshopfriend 3 ай бұрын

Thanks for your feedback, Seamus. You have inspired me to get the blue out with my best taper. If I can get .01mm I will be very happy!

@carlwilson1772 3 ай бұрын

Another excellent video Clive. First rate fault finding backed up by superlative skills.

@Workshopfriend 3 ай бұрын

Thank you, Carl. Although this video series is complete I will continue to look for improvements including bluing the nose taper as suggested by Phil and Seamus.

@chriscrew6541 2 ай бұрын

This video came in really handy, so thank you for that. I have just acquired one of these chucks at a give-away price but the anchor and link are missing which I will be making as per the video. The only downside is that it will now cost me more than I paid for the chuck to acquire some collets!

@Workshopfriend 2 ай бұрын

Glad the video will come in handy. Hope you enjoy setting up your chuck as much as I did!

@redportleft 3 ай бұрын

As always very interesting. Is there any connection between this and your time in Asia or did you just take your hobby with you?

@Workshopfriend 3 ай бұрын

Thanks for your feedback. This was just my hobby - for me real recreation!

@constantinehatzis2807 3 ай бұрын

Interesting as ever. But watching from my place in Greece, so I can't get on with things. I stoned the nose taper on my student, it was in pretty rough shape opposite the key. It seems this is where the swarf falls in the taper of the chuck etc fitted by the careless operator who didn't clean stuff properly. A friend of mine took a light skim on his Colchester Triumph round head. Some of these spindles were not hardened. I believe my spindle is not hardened, but i don't feel machining is necessary.

@Workshopfriend 3 ай бұрын

Thank you, Constantine. I am learning from this that nose taper issues seem to be common and that several have attempted to correct by stoning - some with good results. I would be reluctant to attempt to true up my taper by turning - grinding maybe. I would say this taper was quite hard.

@philhermetic 3 ай бұрын

Excellent work sir!, still looking for a collet chuck for my Student!If you have a known good L0 female taper you could blue up the lathe taper to check it, made a big difference on mine! Very interesting video, and good work on trueing up the damage! Phil "Phil Whitley, My week this week" on KZbin

@Workshopfriend 3 ай бұрын

Thanks, Phil. Yes I am going to choose the best female taper to blue up and see if I can improve the run out but without the added complication of making a video!

@stevewilliams2498 3 ай бұрын

Watching the 1st few minutes it strikes me that all the stroking and rubbing and holding the cone in your hands is causing it to expand with the heat. If you were to cool it slightly instead I would put money on it dropping in easily. Just a theory. Maybe you prove me right or wrong as I watch to the end ?

@Workshopfriend 3 ай бұрын

Thanks, Steve. You could well be right though I thought it might be small quantities of trapped dirt. It was very easy to get it out of square like fitting a bearing.