Keyboard Shortcuts
ctrl + shift + ? :
Show all keyboard shortcuts
ctrl + g :
Navigate to a group
ctrl + shift + f :
Find
ctrl + / :
Quick actions
esc to dismiss
Likes
Search
A (maybe?) different cross slide travel extension?
|
I have added two ball bearings to the cross slide screw by boring a hole into the retainer for the bearings and head on the screw to recess into. Doing that cost me about 1/4" of travel towards the??operator. Not much but I'd like that back and them some while I'm at it. If I'm going that far I might as well add some away from the operator while I'm at it.?
For the away part I'm thinking about all that is going to be required is to extend the screw. I'm thinking drill and tap the end of the screw, threadlock an extension in, turn to diameter and pick up the left hand thread and thread the new section. I know it's 20 tpi but I'm not sure what diameter so I'd just match the existing size???I'm thinking that should work. Am I missing anything? For the towards the operator end I know LMS sells an extended travel kit that includes a milled saddle to allow for the travel because the nut hits but what I'm thinking is this...??Move the nut farther back on the slide, away from the operator. Wouldn't that effectively do the same by giving the nut more room to travel towards the operator???I realize all the other parts would need making and the screw would need an extension on the operator end of course. Am I missing something??? Thanks! Ryan |
|
Thanks Dick. I'll take a look!
Ryan On Jan 25, 2022, 3:57 PM -0500, OldToolmaker via groups.io <old_toolmaker@...>, wrote: Ryan, |
|
Wow!??That's awesome Dick!??I'm sure mine won't turn out near so fancy but I hope it'll be functional!??You wouldn't happen to know the center to center distance on the two screws that mount the feed nut by chance???I think getting those holes located, and making the flat bottoms for the screw heads is going to be one of the bigger headaches of this.?
Ryan On Jan 25, 2022, 3:57 PM -0500, OldToolmaker via groups.io <old_toolmaker@...>, wrote: Ryan, |
|
Thanks Dick. I appreciate the help!
Ryan On Jan 25, 2022, 5:00 PM -0500, OldToolmaker via groups.io <old_toolmaker@...>, wrote: Ryan, |
¿ªÔÆÌåÓýThere are a number of sites and youtube videos discussing this very common mod:?(who is on this list) There¡¯s detailed instructions on both doing this and changing the cross-slide from the existing mechanism to a ball-bearing design in Ted Hansen¡¯s Minilathe book from Home Shop Machinist. He moved the nut like youre describing, (after milling it out!) because it was much easier than milling it out and gives you the extra movement in the right direction, so you can easily use the full 7¡± swing.
--? Bruce Johnson "Wherever you go, there you are." B. Banzai, PhD |
¿ªÔÆÌåÓý
Flat bottoms can be done by finding a HSS twist drill of the correct size and carefully grinding the end flat, --? Bruce Johnson "Wherever you go, there you are." B. Banzai, PhD |
|
Thanks Bruce. Here I kinda thought I had a novel idea LOL!??I was staring at my lathe the other night, wondering how to gain some travel in both directions.??I don't have, nor do I have access to a mill any more and that's when the idea about moving the nut came to me.?
I made up a spacer and it's just over an inch long so if I move the nut the same distance back I should gain that much travel towards me according to the link from Mike Weebly.? ?And I need a little more travel away from me so I'm thinking adding about 2", 2.5" to the screw should do it.? I think drilling and taping the screw and then threading the extension in and soldering. Then I can indicate the screw in off the threads, turn the extension to diameter, then pick up the thread to thread the extension. I think that's a good way to keep the screw as straight as I can. Any better way I'm missing? I probably have a drill bit with a junk point I can grind down too. Thanks for the idea! Ryan On Jan 25, 2022, 7:48 PM -0500, Bruce J <bruce.desertrat@...>, wrote:
|
OldToolmaker
to navigate to use esc to dismiss