Gallery, Projects and General > How to's
Cenerting the Four Jaw
raynerd:
--- Quote from: Darren on October 13, 2009, 04:44:09 PM ---..... off centre precisely too as Tinkerer suggested.
You can also hold square or rectangular work which you can't in a 3 jaw chuck.
--- End quote ---
Yes, I knew it would come in at some point for when I want to turn square or off centre. No, I was just curious if there was any advantages for round. I know quite a few USA based sites, people seem to use 4 jaw self centering quite often so I guess the 4 jaws do hold the work more securely.
Anyway, thanks again for the write up. I`ll be sure to read it again when I come to put in on my lathe.
Darren:
Hi Marv,
Just didn't want you to think I stole the idea, I often post info here that I find elsewhere but always give a link or referral. :thumbup:
I have no proper threading capabilities to make a 2" 8tpi backplate for this my main lathe and have only found one backplate to date. So I had to make a choice on what chuck to fit. I chose a four jaw because of it's versatility. But it sure was tedious to set up and I really got sick of it.
I was dti'ing something one day, setting the top slide to cut a morse 2 taper I think, and it struck me. Not looked back since ..... works perfectly every time :D
Re the second key, I have bags of room and would prefer two longer ones. Did you make yours, what from? ordinary steel?
mklotz:
Yes, I made mine from CRS (Cold Rolled Steel here in the colonies). After two decades or so of use, it still works well.
NickG:
I also thought this would be the easy way to do it but it didn't seem to go to plan and took me ages! Maybe it just needs practice! I found it hard chucking my crank off centre to machine the pin too so last time I made a split bush. Not as accurate way of doing it though, I was relying on milling machine head being trammed perfectly and don't think it was!
Nick
John Rudd:
Ha...Another thread I've come across that saves a lot of grief......... :doh:
I need to spend more time reading than pratting about in the garage and getting it wrong...
Just goes to show how much or little as an individual we know...Knowledge shared and all that...
Thanks Darren :thumbup:
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