Thanks for sharing this. I'm a semi-retired machinist and have been looking at the various miniature lathes. I can't really stand, standing anymore and would like something that I can sit down to operate. I'm so glad that you haven't CNC'd your lathe. I'm an old manual machinist and know nothing about CNC. It's very hard to find anyone on Youtube, that hasn't hooked their machine to a computer. That almost seems like cheating to me. LOL
nice power feed. taking off metal on the return is a real time saver i go in more but i set my tool to cut that way until the last cuts. but when you guys are getting that it's from tool deflection or part or machine deflection. make lots of cuts on the last pass at same setting until nothing comes of and it will be more accurate real important for small machines and thin boring bars or deep hole boring.
Excellent! I am a two year beginning machinist, and the more I learn, the more I realize I do not know. Your inginuity is impressive and thanks for sharing your ideas!!
Indeed nice video, I see that on the return it still takes a bit of aluminium off, I got that same problem with my taig, not sure why that is happening.
Removing material on the back cut.... this is also mysterious to me. I have read a few things online about it, but no real reason why. Everyone recommends backing off the tool before returning. I am sure it has something to do with the cutting angle and how the cutting edge "feeds" into the material. Let me know if you figure it out.
@Setharoo2 there is allways spring in the material and machine, this is the reason for cutting on the way back. U can just pull on the toolholder when u go home to do another cut! It works most the time, sometimes theres been to much give in the setup tho.
Its just flexing in the alu-bar and machine parts that gives "material on exit". It takes a substantial pressure to push a knife through steel, so there is always a bit of bending. And when you go back you dont have the pressure from material removed and thus you get some more pealing on the return.
@Setharoo2 that may be tool deflection. these are nice machines, but it'll happen even on big ones that cost hundreds of thousands. the tool inevitably bends a tiny bit on the roughing out cuts. then a final pass with next to no tool load polishes the dimensions. with these being so small, what seems like a light cut may still need a finishing pass. but I LOVE the video, and ms parrot rapping on your cans :D
@Setharoo2 Hello All you SHERLINE USERS! PLEASE HELP ME! I have a 4400 Sherline lathe and was wondering if any of you smart folks out there could tell me what kind of chuck to use to turn or lathe an aluminum dowel 1 and 1/2 inches in diameter by 8 inches! My 1030 Chucks screws hit the plate and I cannot do any lathing on a 1 and one half inch dowel! I am a 1st time owner and green! Sherline Inc has not responded to my e mail! PLEASE HELP ME! GIVE ME ADVICE! THANKS! Adam 6:48 p.m.
@happymark1805 Believe it or not it's due to deflection. Multiple passes with no changes to bit position will continue to draw material until the deflection is zero.
@happymark1805 as the material rotates down into the cutting bit, it deflects away which is normal. Because of the long length of the material there is more deflection. A steady rest or follow rest would help reduce this deflection. Lighter cuts would also reduce the deflection although it would not eliminate it.
The reason the lathe turns some materil off on the return cut is because the bar gets deflected away from the tool during the main cut. The bar and it could be in the chuck or it could have a centre in it, will deflect away from the tool. When you do a "return cut" as it is called, it takes the excess materiel off.
Thank you for your kind words. I have watched most of your videos on Youtube and learned a lot from you. I am serious when I say that it is your videos that finally encourged me to by my first Sherline. I am still learning and loving my machine....Thank you!
This is a great video. Could you please give me more information on the power feed motor you are using. make,model any numbers etc. Thx. Ron strtcop
strtcop 7 months ago
This is a great video. Could you please give me more information on the power feed motor you are using. make,model any numbers etc. Thx. Ron
strtcop 7 months ago
Very nice video (and I did learn a few things, poor me.)
alhubby 10 months ago
I have a power feed on my 4400 lathe. Can I make it reversible too? Great vid!
adriannyasia 10 months ago
Thanks for sharing this. I'm a semi-retired machinist and have been looking at the various miniature lathes. I can't really stand, standing anymore and would like something that I can sit down to operate. I'm so glad that you haven't CNC'd your lathe. I'm an old manual machinist and know nothing about CNC. It's very hard to find anyone on Youtube, that hasn't hooked their machine to a computer. That almost seems like cheating to me. LOL
junglejammer 1 year ago
ethanol is best lube for aliminium! I take deeper cuts with slower feed than u.
Axbent 1 year ago
nice power feed. taking off metal on the return is a real time saver i go in more but i set my tool to cut that way until the last cuts. but when you guys are getting that it's from tool deflection or part or machine deflection. make lots of cuts on the last pass at same setting until nothing comes of and it will be more accurate real important for small machines and thin boring bars or deep hole boring.
matt986423 1 year ago
Cute Congo African Grey! I've got one in the shop, too. A necessary accessory. :)
tzkelley 1 year ago
Excellent! I am a two year beginning machinist, and the more I learn, the more I realize I do not know. Your inginuity is impressive and thanks for sharing your ideas!!
gotwot7573 2 years ago
Indeed nice video, I see that on the return it still takes a bit of aluminium off, I got that same problem with my taig, not sure why that is happening.
Tanks for sharing Your video
happymark1805 2 years ago
Removing material on the back cut.... this is also mysterious to me. I have read a few things online about it, but no real reason why. Everyone recommends backing off the tool before returning. I am sure it has something to do with the cutting angle and how the cutting edge "feeds" into the material. Let me know if you figure it out.
Setharoo2 2 years ago
@Setharoo2 there is allways spring in the material and machine, this is the reason for cutting on the way back. U can just pull on the toolholder when u go home to do another cut! It works most the time, sometimes theres been to much give in the setup tho.
Axbent 1 year ago
@Setharoo2
Its just flexing in the alu-bar and machine parts that gives "material on exit". It takes a substantial pressure to push a knife through steel, so there is always a bit of bending. And when you go back you dont have the pressure from material removed and thus you get some more pealing on the return.
stegtenudlar 1 year ago
@Setharoo2 that may be tool deflection. these are nice machines, but it'll happen even on big ones that cost hundreds of thousands. the tool inevitably bends a tiny bit on the roughing out cuts. then a final pass with next to no tool load polishes the dimensions. with these being so small, what seems like a light cut may still need a finishing pass. but I LOVE the video, and ms parrot rapping on your cans :D
lexichronicle2 1 year ago
@Setharoo2 Hello All you SHERLINE USERS! PLEASE HELP ME! I have a 4400 Sherline lathe and was wondering if any of you smart folks out there could tell me what kind of chuck to use to turn or lathe an aluminum dowel 1 and 1/2 inches in diameter by 8 inches! My 1030 Chucks screws hit the plate and I cannot do any lathing on a 1 and one half inch dowel! I am a 1st time owner and green! Sherline Inc has not responded to my e mail! PLEASE HELP ME! GIVE ME ADVICE! THANKS! Adam 6:48 p.m.
medusanman1964 4 months ago
@Setharoo2 ever figure the material removal on the backcut problem? i think i see what causes it.
felderup 1 month ago
@happymark1805 Believe it or not it's due to deflection. Multiple passes with no changes to bit position will continue to draw material until the deflection is zero.
FreddyFrogger 1 year ago
@FreddyFrogger - could be but I ca'nt find were that deflection comes from.
happymark1805 1 year ago
@happymark1805 as the material rotates down into the cutting bit, it deflects away which is normal. Because of the long length of the material there is more deflection. A steady rest or follow rest would help reduce this deflection. Lighter cuts would also reduce the deflection although it would not eliminate it.
Botwire 1 year ago
@Botwire - even with very light cuts on short material it still does that
happymark1805 1 year ago
The reason the lathe turns some materil off on the return cut is because the bar gets deflected away from the tool during the main cut. The bar and it could be in the chuck or it could have a centre in it, will deflect away from the tool. When you do a "return cut" as it is called, it takes the excess materiel off.
stuartstrong 6 months ago
Wow, nice vid.
Thanks for sharing
Regards
LuiZ
tryally 2 years ago 3
Thank you for your kind words. I have watched most of your videos on Youtube and learned a lot from you. I am serious when I say that it is your videos that finally encourged me to by my first Sherline. I am still learning and loving my machine....Thank you!
Setharoo2 2 years ago