By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by Allendale Jan 24th

Mini Lathe Gib strip question

All Topics | Latest Posts

Search for:  in Thread Title in  
Keith Charters14/07/2020 14:47:29
1 forum posts
1 photos

Hi, having recently retired I have decided to take up model engineering again after a gap of 20+ years. I have recently taken delivery of a new Warco Super Mini Lathe with which I am very pleased. However, during a strip down and clean to prepare it for use, I have noticed that both the cross slide and compound slide gib strips have only one indent drilled, not the three I was expecting (see attached photo). Can someone advise me please is this a problem? Everything appears to be smooth and I cannot detect any movement in either slide but I am concerned that this may be a problem once the lathe is regular use. Arceurotrade sell a gib strip upgrade to brass strips for these machines so would it be advisable to upgrade to the brass strips?

Thanks in advance, Keith.compound gib strip.jpg

Andrew Tinsley14/07/2020 16:10:33
1148 forum posts

Hello,

It is easy enough to drill and tap some more holes and use appropriate grub screws to do as you suggest. I am not a great fan of brass gib strips. I have always used ground flat stock for this application. Having said that a lot of folk do use brass. You pay your money and takes your choice!

Andrew.

old mart14/07/2020 19:18:11
1825 forum posts
148 photos

The indent is only to stop the gib slipping sideways out of place, it is common practice with lathes, even Myford.

Brian Oldford15/07/2020 21:33:13
avatar
673 forum posts
18 photos

Whilst you have it apart you might want to consider fixing the gib with a dowel. Such an arrangement reduces the wedging action caused by the gib sliding up any point on the screw and thus increasing the friction. There's one design in The Model Engineere Workshop Manual by Geo. H Thomas.

mechman4816/07/2020 12:47:18
avatar
2689 forum posts
421 photos

As Andrew says i would put a couple more dimples in the gib to mate up with the other two adjustment screws. I find that these gibs tend to be of questionable quality at the best of times from the manufacturers. Chinese QC is one step above a chocolate fire guard to my mind . I had a similar problem with my WM 250V-F, bought back in 2012, I ended up making a new gib strip, from brass as I had no suitable ground flat stock, it's been in since then without any problems..

OEM gib strip as supplied.. nothing but a strip of scrap steel!

gib key mod (2).jpg

New brass gib fitted... as can be seen the top slide corner undercut is way to wide..

gib key mod (12).jpg

Another mod added.. top slide gib lock..

gib key mod (16).jpg

George.

oldvelo16/07/2020 18:25:32
218 forum posts
51 photos

Hi Keith

The method I used is to clean up the indent with a egg beater hand drill one at a time with the other adjusters tightened up.

Useing a 4 mm bearing ball to locate the end of a 5mm Cup Point Grubscrew < o > explains the layout

Eric

Ron Laden17/07/2020 09:07:08
avatar
1970 forum posts
390 photos

I would suggest replacing the gib with a better one also adding 2 more adjusting screws fitted between the 3 giving 5 in total. You could make up a thumbscrew or similar for a lock fitted in the centre position whilst your at it. I was forever having to adjust the gibs on my mini lathe, you should find a decent gib with more screws won't need adjusting as often.

Ron

Edited By Ron Laden on 17/07/2020 09:19:27

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Latest Forum Posts
Support Our Partners
Warco
ChesterUK
Eccentric July 5 2018
EngineDIY
Allendale Electronics
cowells
emcomachinetools
Eccentric Engineering
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest