• We want to encourage those of you who ENJOY our site and find it USEFUL to DONATE and UPGRADE your membership from active member to donating or premium membership. If you want to know the differences in membership benefits, please visit THIS PAGE:

    https://www.hobby-machinist.com/premium/

    Donating memberships start at just $10 per year. These memberships are in fact donations that help pay our costs, and keep our site running!
    Thank you for your donation, God Bless You

  • As some of you know, I have wanted to stop managing H-M for some time. It's a tremendous strain on my personal life. I want to set up my own shop. In September, September 15, to be exact, it will be 8 years that Hobby-Machinist has been in existence.

    We've seen a lot of changes. In March, 4 moderators left to start their own site. They took some of you with them. So now you have split loyalties. You know who you are. They didn't like my way of managing this place, and thought they could do better without me. They didn't. The only thing holding them together is that they hate me. Their site was down until mid July. That is why I wanted to stay involved on here until they could learn to run this place. But they wanted me to leave right away, without the training part.

    Anyway, I have been training VTCNC to run things here. Dabbler is going to learn too. I feel that they are ready to start taking over the operation. I will be here to help in case they need, but I don't think they will. Tony Wells is and will be here also to consult with. I will be doing backups, upgrades, and installing addons. Other than that, I don't want to know about this place.

    What about the 4 moderators who were disloyal? I don't care. It isn't my call anymore. I would think that, rather than fumble, they ought to come back and do good work. That's up to them. If they want to return to try to lead more members to their site, I am done caring. I suffered too much aggravation worrying about it. I don't plan to spend any more. What they do impacts on them. I have my own opinions including those of you who followed them there. No longer my problem.

    I am leaving this place in good operating condition, and financial condition.
    --Nelson
[4]

Plastic Gibs on 12" Atlas or Craftsman Commercial Lathes

[3]
[10] Like what you see?
Click here to donate to this forum and upgrade your account!

wa5cab

Downloads Moderator
Staff member
H-M Platinum Supporter ($50)
Joined
Dec 25, 2011
Messages
4,167
Likes
975
#1
As most of you know, at some point fairly late in the life of the 12" Commercal production, Clausing changed the material (originally 1018 or thereabouts steel) that the cross slide and compound slide gibs were made of to plastic. Current best guess is that this happened around 1974/75. This was during the production life of the final version of the 12: and probably around the time that the Atlas 3950 Mk2 6" was replaced by the 10100, and Sears quit selling the 101.21200 (their version of the 3950). I have listed below for both Atlas and Craftsman the highest reported serial numbers that still had steel gibs and the lowest serial numbers reported as originally having plastic. If anyone has either an Atlas or a Craftsman 12" with serial number falling between either of those pairs listed, please report at least model number and serial number as well as whether the two gibs are steel or plastic.

Atlas highest steel 100274
Atlas lowest plastic 104418

Craftsman highest steel 105302
Craftsman lowest plastic 109008

A rough guess is that Sears sold about 11,000 of the final version 12" while Atlas sold around 7,000. So I'll add the highest known serial numbers of the two model groups.

Atlas 106781 (my 3996)
Craftsman 109258

If anyone has a higher number in either group, please report that, too.
 
[6]
[5] [7]
Top