Lathe dro install

[YYCHM]

Last weekend’s project, and the first one using the digital readout. Was more milling than turning but it all happened on the lathe.

You made that on your lathe?

 

[LRSbm146]

@YYCHM yes all on the lathe. The biggest challenge was the keyway. I’m currently looking for a mill but it needs to be the right one.

 

[Darren]

Very nice work! post more

 

[LRSbm146]

Thanks @dfloen my last couple projects were airguns. My kids and I like shooting but it’s getting harder to get out with the actual firearms. We can shoot airguns up the road at my buddies place.
This started as a crosman 2240 and not quite sure what it is now. I didn’t make the receiver but I started to copy it.
We were hitting pencils at 30yrds in the shop.

 

[Darren]

Nice . My 8 year old son just got into airguns last summer. He's quite the sniper too.

 

[140mower]

@YYCHM yes all on the lathe. The biggest challenge was the keyway. I’m currently looking for a mill but it needs to be the right one.

Very nicely done. I wimped out and bought my micrometer stop, looking at yours, I really wish I hadn't. That is the wonderful thing about the lathe, it's the one tool in the shop that can do it all.... Just takes a little more planning.

 

[LRSbm146]

@dfloen couple more airguns... these are a couple of late 90’s paintball guns. Picked up on Kijiji in “not working” condition. Did a little research on them and I guess the original versions were made by a guy named Bud Orr in his home machine shop. Sounds it was a big deal for the game... I don’t really even paintball but it was a cool project

 

[6.5 Fan]

Very nice adjustable stop.

 

[LRSbm146]

Thanks @140mower & @6.5 Fan. There’s a lot of experience around here so it’s nice to get a “good job” from everyone. It’s probably just the paint. Hahaha

Side question about knurling... I haven’t done much and I only have one set of wheels for my knurler... I just kind of go for it.
Should a guy be knurling on the lead screw or on the feed bar?
I used the lead screw this time but usually use the feed. It’s a pretty aggressive process and seems like it might be better to do on the feed bar because it has a clutch on it?

 

[Susquatch]

Last weekend’s project, and the first one using the digital readout. Was more milling than turning but it all happened on the lathe.

Beautiful....... Just plain beautiful. Much nicer than others I see around. Might be one quite similar in my future.

I'm thinking I would build a defeatable stop switch into whatever I make so it could also serve as a crash avoidance mechanism.

 

[Susquatch]

Thanks @140mower & @6.5 Fan. There’s a lot of experience around here so it’s nice to get a “good job” from everyone. It’s probably just the paint. Hahaha

Side question about knurling... I haven’t done much and I only have one set of wheels for my knurler... I just kind of go for it.
Should a guy be knurling on the lead screw or on the feed bar?
I used the lead screw this time but usually use the feed. It’s a pretty aggressive process and seems like it might be better to do on the feed bar because it has a clutch on it?

I've only ever done it by hand not using feed at all. I'm not sure it makes any difference. If the existence of a clutch matters (I don't have one on either screw), then I think you should back off the pressure a bit.

 

[LRSbm146]

@Susquatch I would normally go pretty easy, maybe make a test piece. I made the mistake of watching YouTube first. seemed like most were putting a lot more pressure than I would do or have done, one guy was doing it similar to threading.
the carriage stop...
There are some plans for something similar on a site called Tomstechniques (I think). I don’t usually use plans and went off this picture instead. I used a 1/2-20 thread which works out the same as the one in the picture 0.05” per rev. It probably won’t ever get used as a measuring tool so did bother with much for markings on the dial. Not sure if you noticed the 5 drill marks on the back of the dial I made? With the ball and spring it gives you a “click” every 0.01”.

 

[Susquatch]

@Susquatch I would normally go pretty easy, maybe make a test piece. I made the mistake of watching YouTube first. seemed like most were putting a lot more pressure than I would do or have done, one guy was doing it similar to threading.
the carriage stop...
There are some plans for something similar on a site called Tomstechniques (I think). I don’t usually use plans and went off this picture instead. I used a 1/2-20 thread which works out the same as the one in the picture 0.05” per rev. It probably won’t ever get used as a measuring tool so did bother with much for markings on the dial. Not sure if you noticed the 5 drill marks on the back of the dial I made? With the ball and spring it gives you a “click” every 0.01”.

Yes, I noticed.

I would never use it for measuring either. But it is nice to be able to adjust the stop point with some precision. I have a purchased reamer stop that works the same way. It is Fg awesome!

The idea behind an electric shutoff is to be able to thread closer to a shoulder. Maybe that's playing with fire but it's got to be better than my old reflexes and rotten vision.

 

[PeterT]

Side question about knurling... I haven’t done much and I only have one set of wheels for my knurler... I just kind of go for it.
Should a guy be knurling on the lead screw or on the feed bar?
I used the lead screw this time but usually use the feed. It’s a pretty aggressive process and seems like it might be better to do on the feed bar because it has a clutch on it?

If you do a search here you'll find some hits on knurling. Another one of those multi-faceted topics. I'm no expert but I've become a believer that size matters for good results, meaning the ideal starting OD is related to the knurl pitch. I made a spreadsheet based on workflow from this site.

General Knurling Information

General Knurling Information

accu-trak.com

I knurl on power feed. Actually I cant think of a good reason if PF vs threading screw offers advantages. Flip a coin what part of your lathe you want to wear more, the worm gear or the threading clam shells LOL. I've seen people reverse on the work & increase depth progressively but staying in gear is common to both modes. What can spoil a good knurl is eating the chips. So cleaning & lubrication is a good thing. Ultimately its a forming process so once the depth is set & tracking, I think its just ploughing axially along the work.

I hold a view that bump knurlers are unnecessarily hard on everything - the part, the work holder, chucks, centers, bearings. The scissor style knurls are much kinder to the entire setup. Beware there are some bad ones out there where the arms flex too much or misaligned & the wheels are garbage.

on my project list

 

[Susquatch]

I hold a view that bump knurlers are unnecessarily hard on everything - the part, the work holder, chucks, centers, bearings. The scissor style knurls are much kinder to the entire setup.

I like the knurler in that video. Keep in mind that I am not a fan of YouTube videos in general so that's not an endorsement of the video - just the knurler.

Seems like I'll be making more than one tool holder in the years to come......

 

[YotaBota]

There are some plans for something similar on a site called Tomstechniques (I think).

The carriage stop drawings for Tomstechniques and Cogwheel are in the "plans" section here on the site.
Nice job on your carriage stop.

 

[Susquatch]

The carriage stop drawings for Tomstechniques and Cogwheel are in the "plans" section here on the site.
Nice job on your carriage stop.

Huh? Plans section?

Edit - Found it!

Thread 'Carriage Stop' https://canadianhobbymetalworkers.com/threads/carriage-stop.4133/

Didn't know that section existed. THANK YOU!