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a few questions
kf4zgz <[email protected]>
Hi gang!
I've been playing,er, working with the lathe and learning a lot....now fer some info. 1- What type of tool is best for what job? considerations: cost, main material is plastic (PVC), some metal involved to keep if interesting. is there a general purpose tool for most use? HSS or carbide....pre-made or grind my own? 2-Is there a way to hold square or odd pieces in a 3-jaw chuck? 3- Is there a good book to learn these things from...i.e. 'Metal Lathes for dummies" 4- Suggestion for a good 1st time real project, thats easy! Thanks , Matt |
bbftx <[email protected]>
Matt,
There are lots of books out there. Check your library first if you want to save some money! Here's a link to an onsite selection of good books on machining. See #15 on the list in particular for one on "Workholding in the Lathe" regarding your question #2. Odd shaped pieces are best handled in an independent 4-jaw chuck, or by mounting them to a faceplate mounted to your lathe's spindle. Online, MIT has a nice set of pages with some general machining tips, including some video clips that help you see what they are talking about. Regarding tools, I find HSS toolbits best for general all-around use (for aluminum, brass), but there are different bits for different applications and materials. Flint --- In 7x12minilathe@..., "kf4zgz <kf4zgz@n...>" <kf4zgz@n...> wrote: Hi gang! |
Craig C. Hopewell <[email protected]>
--- In 7x12minilathe@..., "kf4zgz <kf4zgz@n...>"
<kf4zgz@n...> wrote: Hi gang! 1- What type of tool is best for what job?HSS is good for most turning. I only recently used a carbide cutter for the first time with little difference, but I'm not very experienced. Of course, you have to grind the HSS blanks. 2-Is there a way to hold square or odd pieces in a 3-jaw chuck?Sparey mentions this in his excellent book "Amateur's Lathe", but also mentions not stressing or straining the self-centering chuck. 3- Is there a good book to learn these things from...i.e. 'MetalThe book mentioned by bflint, "Work Holding in the Lathe", by Tubal Cain is also excellent, and Wise Owl is a good company. They also have Sparey's book. The www.mini-lathe.com web site, by Frank Hoose is an excellent source of information on the mini-lathe. 4- Suggestion for a good 1st time real project, thats easy!The first thing I made was a cylinder for a small engine that I just designed on the fly. I made it of 1" aluminum round stock with a 1/2" bore, tapered exterior with fins, a small unfined area ending with a crankcase mounting flange, and a gasket surface for a cylinder head at the other end. Finished length is about 1 3/8". You can see model engine pictures at websites by search for various things, like model engine, or Sparey diesel, and other similar things. Craig |
For most stuff, a well sharpened HSS tool gives the best results.
However, there's a lot to be said for the convenience of a pre-ground carbide tool. HF sells a small insert style set of holders, the inserts are appreciably nicer than the cheap, brazed shank tools. The 3-jaw is mostly for round/hexagonal pieces. It's possible to hold squares in it, but, they're off-center & not very secure. A 4- jaw can hold just about anything to whatever degree of accuracy you've got the patience to set it to. There are some 4" body ones that are more capable than the 3" body sold by HF, Grizzly, etc. The classic lathe book is, "How to run a lathe" by the Southbend Lathe co. Lindsay books has it & lots more reprints of old books. Roy --- In 7x12minilathe@..., "kf4zgz <kf4zgz@n...>" <kf4zgz@n...> wrote: Hi gang! |
More sites:
Roy --- In 7x12minilathe@..., "kf4zgz <kf4zgz@n...>" <kf4zgz@n...> wrote: Hi gang! |
John <[email protected]>
Hi Matt,
I'm new to lathes too so this may be a case of the blind leading the blind, but as a first project I built Rick Kruger's tailstock camlock, see: lstock/ This was reasonably easy to build from scrap, I used old bolts for raw material and a piece of brass rod I found for the lever. I built the version with the lever behind the tailstock, drilling a hole through the web, an option Rick suggested. By having the cam shaft go through the web it is constrains the vertical shaft from twisting so a large washer was adequate as the contact for the under side of the bed; Rick used a more elaborate contact with a setscrew to keep the vertical shaft from twisting. Since I don't have a 4 jaw chuck (it's in the mail...) I put a shim between one jaw and the part as an offset to make the cam. Overall, it's simple (once you see Rick's design), fun to make and it works great. John --- In 7x12minilathe@..., "kf4zgz <kf4zgz@n...>" <kf4zgz@n...> wrote: Hi gang! |
Jerry Smith
I found this link to be really helpful and I wish to thank John for pointing me to it.
toggle quoted message
Show quoted text
It's a good teaching reference, Jerry At 12:19 AM 1/21/2003 +0000, you wrote:
Hi Matt, |
Here's an alternative design. Main advantage is that
the lever is out of the way of the compound. Frank Hoose --- "John <moran03@...>" <moran03@...> wrote: Hi Matt, lstock/ __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. |
I recommend learning to grind your own tools. You
will find that you can grind many specially shaped tools to solve all kinds of problems. It's not hard - just buy about 20 blanks and dive in. Here are some links that may help: Frank Hoose --- "kf4zgz <kf4zgz@...>" <kf4zgz@...> wrote: Hi gang! __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. |
John <[email protected]>
Hi Frank,
Thanks for the comment. Sorry I wasn't clear about the handle location. I did put the handle in the position shown on your site - it seems more convenient there - but used Rick's mechanism for actuation. I have since posted a picture on my site: I like the cam concept a lot and will try to use it to make a variation of Vikki Ford's saddle lock. It seems as if this would allow locks on both sides of the saddle, actuated by one lever, without too much difficulty. John --- In 7x12minilathe@..., Frank Hoose <fhoose@y...> wrote: Here's an alternative design. Main advantage is thatlathe.com/Mini_lathe/Modifications/Camlock_tailstock/Camlock.htm
lstock/ |
Very nice, John. I love the camlock tailstock - it's
a huge timesaver and just a lot more pleasant to work with than the wrench & nut arrangement. I checked out your website & noticed the info on microscopy. My dad bought microscopes for me and my sister for Xmas when I was about 10 which began a lifelong fascination with them. When I was in HS I bought an oil immersion scope with a mechanical stage from Lafayette Radio. It took weeks to arrive and I remember coming home from school every day looking for the much awaited package. When I finally got it I was really excited - spent many happy hours with it. I sold it some years later when I was newly married and needed money. Sometime in the next 2-3 years I hope to buy a good used microscope and get back into it. You may want to check out my cam-action carriage lock mod: Frank Hoose --- "John <moran03@...>" <moran03@...> wrote: Hi Frank, lathe.com/Mini_lathe/Modifications/Camlock_tailstock/Camlock.htm the usedlstock/ __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. |
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