MadModder

The Shop => Tools => Topic started by: websterz on May 13, 2011, 04:01:09 PM

Title: 7x12 revisited
Post by: websterz on May 13, 2011, 04:01:09 PM

I have been a big advocate of removing the compound on the little 7x lathes for quite a while now. My experience had showed it to be a huge weak link and the source of much flex and chatter. In my quest to stiffen it up  (no snickering) I have done just about everything possible. I fitted tapered gibs, lapped the ways, built a QCTP and holders, and yes, removed the compound in favor of a solid plinth. The lathe ran well...really well. Parting on it is a pleasure, and that is good as I often make 100+ parting cuts a day in 4140 steel. I am planning to build an er32 chuck for my little lathe and as such need the ability to cut a short inside taper. I was going to build a replacement for the factory compound, just a basic dovetail arrangement with a leadscrew so I could run a tool in and out, maybe an inch and a half or so would be all the travel I need. On a lark I decided to try the original bits again and they absolutely work a treat now! I guess all the other mods have helped cure the underlying issue. I turned a couple of short tapers in aluminum, and did the very first single point threading that has ever been cut on that machine (and only the second I have ever done!). Needless to say I am a happy camper today!! Go hug your mini lathes guys, they really are good little bits o' kit.

Title: Re: 7x12 revisited
Post by: Brass_Machine on May 13, 2011, 04:14:19 PM

I have the 7x10 and have abused the hell out of it. It has more than paid for itself many times over...

Lets see some pictures of those mods!

Eric

Title: Re: 7x12 revisited
Post by: saw on May 13, 2011, 04:50:24 PM

 :worthless:
Me too.  :headbang:

Title: Re: 7x12 revisited
Post by: websterz on May 13, 2011, 05:40:18 PM

Okay...resurrection underway...

Title: Re: 7x12 revisited
Post by: websterz on May 13, 2011, 06:06:34 PM

Here is my QCTP post with all the juicy pics and such:

http://madmodder.net/index.php?topic=2604.msg27977#msg27977

Title: Re: 7x12 revisited
Post by: saw on May 13, 2011, 06:14:39 PM

There is some error according to the picture they don't show up  :doh:

Title: Re: 7x12 revisited
Post by: websterz on May 13, 2011, 06:17:53 PM

That is odd...they are all there for me. Try this direct link to one of the pics:

http://www.okiegauges.com/images/qctp/holders.jpg

Title: Re: 7x12 revisited
Post by: saw on May 13, 2011, 06:41:56 PM

No I can't come to that site. :(

Title: Re: 7x12 revisited
Post by: andyf on May 13, 2011, 06:45:08 PM

Quote from: websterz on May 13, 2011, 06:17:53 PM

That is odd...they are all there for me. Try this direct link to one of the pics:

http://www.okiegauges.com/images/qctp/holders.jpg

Says "Domain Name Expired" to me

Andy

Title: Re: 7x12 revisited
Post by: crabsign69 on May 13, 2011, 06:57:29 PM

I got a warning had to close browser really fast. red warning

Title: Re: 7x12 revisited
Post by: websterz on May 13, 2011, 07:39:40 PM

Not really sure about the red warning thing but the domain had indeed lapsed. I have renewed and initiated a domain transfer so that all my eggs are in the same basket. Sorry for the mix-up guys.

Title: Re: 7x12 revisited
Post by: jim on May 14, 2011, 05:44:40 PM

i can see :wave:

Title: Re: 7x12 revisited
Post by: websterz on May 14, 2011, 11:45:42 PM

Okay, everyone over to Jim's place to see the pics!  :lol: