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Several Regions have held meetups already, but others are being planned or are evaluating the interest. The Calgary Area Meetup is set for Saturday July 12th at 10am. The signup thread is here! Arbutus has also explored interest in a Fraser Valley meetup but it seems members either missed his thread or had other plans. Let him know if you are interested in a meetup later in the year by posting here! Slowpoke is trying to pull together an Ottawa area meetup later this summer. No date has been selected yet, so let him know if you are interested here! We are not aware of any other meetups being planned this year. If you are interested in doing something in your area, let everyone know and make it happen! Meetups are a great way to make new machining friends and get hands on help in your area. Don’t be shy, sign up and come, or plan your own meetup!
Worn nuts for mill leadscrew
- Thread starter Gennady
- Start date
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Great idea!
My sonewhat lousy suggestion is to make a short duplicate section of your leadscrew, then squeeze a full nut onto it. Then unscrew the full nut and cut the nut in half.
Might be easier to single point the nut a bit loose first, then squeeze it to fit.
Well... It is getting close to making an acme tap...
Also - nut consist out of two shapes/parts: cylindrical part and flange. How to squeeze it evenly on screw ? Any bright idea ?
Ya, but I think single pointing with a custom HSS bit makes more sense.
The best I can suggest is to start with a very poor fit and then melt that over the small leadscrew stub by heating the stub first.
But to be honest, I'd prolly have thrown the towel in quite a ways back. At this point in your journey, I'd forget the whole idea of a plastic half nut and machine a whole new nut out of bronze. If mine ever goes, that's where I would start anyway. I like all this 3D printed parts stuff, but sometimes you just need to bite the bullet and do it the old fashioned way.
I'm not understanding the picture. Why is the material marbleized? You melted different materials & squeezed it into a female mold or something?
It is just different colours of the same HDPE. Some bottles, containers, other HDPE stuff. I was checking that it is not mixed types of plastic. I cut all bottles into small flat pieces and filled up cylindrical mold ( small LPG cylinder) . When plastic became soft and sticky (it is never melting into liquid) I pressed mold in with fitted cap. That is why it looks like twirled.
Indeed not. This is parts to try single thread cutting like Susquatch suggested and I think this is right way to go. I am currently gearing up for single thread cutting - ground bit to a suitable profile, prepared boring bar, already cut short piece of male lead screw. Quite a chatter, several times missed thread dial indicator, several times stalled the lathe with too deep cut... What a drama !!!
Next - to practice on plastic internal threading.