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Unread 11-29-2017, 08:54 AM
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Lathe experience or recomendations

Does anyone have experience or a recommendation on a small affordable lathe they use for FRC ? The main use would be to turn shafts for encoders and other such modifications.

We are considering something like this.

http://www.grizzly.com/products/10-x...e=grizzly.com#
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Unread 11-29-2017, 10:11 AM
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Re: Lathe experience or recomendations

That size lathe would be perfect for FRC machining, and the Grizzly comes with a lot of nice extras - a four chuck, faceplate, and dead center.

It doesn't appear to come with a drill chuck. You will want to pickup a MT3 to Jacobs Taper Adapter (JT) and a chuck. A smaller 1/2" chuck would have better holding power for the range of drills your likely to use. The "JT2" size supports a lot of smaller chucks.

While the stock four way tool post will work, you will often need to shim the various tools to get them on center. An AXA quick change tool post with some extra standard holders makes changing tools very quick, and each can be adjusted on center once. I recommend the "Wedge Style" over "Piston Style" posts. Phase II would be a good discount brand, with Aloris and Dorian being the higher end options.

A few accessories to consider.
Center Drill(s) - For locating center before drilling
Indexable Tool Set w/ extra inserts
Dial Indicator and Magnetic Back (location of features) they make 2" travel indicators (cheap DRO)
Parting Tool and Holder - Great for making PVC spacers
Grooving tool for E-Clips and C-clip Widths
Spring Loaded Tap Guide (B&S) - Starting Taps Straight
Small fine file with handle, and Lutz file card

Also Tapping/Cutting Fluid.
Squeeze Oiler with Brass Tipped Cone - Seals Around Oiler Balls for lubricating lathe
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Unread 11-29-2017, 10:20 AM
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Re: Lathe experience or recomendations

Just to noteÖ There are several good threads on this topic.. but, I was compelled to reply. I have that lathe, G0602. Itís been good. We have gotten a lot of good use out of it. You may find you CAN get by with a smaller lathe.

I find that the Grizzly equipment is cost effective and decent quality. We got the smaller version for our kids (http://www.grizzly.com/products/7-x-...al-Lathe/G8688) when it went on sale Itís really a good little lathe. Cost effective, easily moved and the small motor will stall if somebody gets too aggressive on a cut. So, itís a good one for new machinists. Weíve turned up to 4Ē stock in that machine on occasion.

I think G8688 is the same as the model sold at Harbor Freight, but Grizzly does a much better job on Quality control and we have had good luck. Handles are a little close together and I do smack my fingers if Iím not careful.
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Unread 11-29-2017, 11:03 AM
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Re: Lathe experience or recomendations

I was asked by our school to make recommendations for outfitting a machine shop for the new STEM Center that is being built on our campus. I scoured these forums and asked a number local experts and ended up making this lathe as a recommendation. It's big enough for anything an FRC team would want to do and Grizzly has a good reputation for quality and durability.

Unfortunately, we haven't been able to set any of the machines up yet since the construction of the Stem Center won't be complete for about 2 more weeks. Then we'll be really busy getting the equipment ready for the season.
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Unread 11-29-2017, 11:33 AM
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Re: Lathe experience or recomendations

We own the Grizzly G0752 (variable speed version of the G0602). It works alright but we have put enough money into to make it usable that we should have just bought the Precision Matthews version that comes with all the extras.

http://www.precisionmatthews.com/sho...022v-pm-1030v/

Quick change tool post, actual inch lead screws, cam lock tail stock, etc all make the lathe so much more usable than the other 10-22 lathes.
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Unread 11-29-2017, 12:26 PM
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Re: Lathe experience or recomendations

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Originally Posted by AllenGregoryIV View Post
We own the Grizzly G0752 (variable speed version of the G0602). It works alright but we have put enough money into to make it usable that we should have just bought the Precision Matthews version that comes with all the extras.

http://www.precisionmatthews.com/sho...022v-pm-1030v/

Quick change tool post, actual inch lead screws, cam lock tail stock, etc all make the lathe so much more usable than the other 10-22 lathes.
You don't find powered cross-feed on many lathes this size. With a Standard AXA tool post, and a full set of accessories this looks like a great option.
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Unread 11-29-2017, 12:34 PM
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Re: Lathe experience or recomendations

Quote:
Originally Posted by AllenGregoryIV View Post
We own the Grizzly G0752 (variable speed version of the G0602). It works alright but we have put enough money into to make it usable that we should have just bought the Precision Matthews version that comes with all the extras.

http://www.precisionmatthews.com/sho...022v-pm-1030v/

Quick change tool post, actual inch lead screws, cam lock tail stock, etc all make the lathe so much more usable than the other 10-22 lathes.
We have the PM 1022 from a couple of years ago. Not quite sure what might've changed to it since then. I added on a 2 axis DRO a year later and everything has been working great so far. I haven't talked with Matt in a long time, but he was always quick to respond to any email I sent.

Having the quick change tool post is a time saver. And as mentioned already, the power cross feed is a great feature you don't find on many lathes this size.
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Unread 11-30-2017, 06:38 PM
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Re: Lathe experience or recomendations

Thanks for the responses. I am glad to hear others have the same or similar models.
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Unread 12-04-2017, 05:24 PM
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Re: Lathe experience or recomendations

1676 in NJ also has a G0602 and it is quite good for the money.
If you get one, be sure to set aside a few days to set it up properly. Nothing makes me sadder than a good lathe set up to be inaccurate.
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Unread 12-04-2017, 05:44 PM
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Re: Lathe experience or recomendations

There's nothing wrong with these mini lathes but I always recommend teams buy used lathes over new.

New lathes tend to be quite expensive because of all the little accessories needed to run them and the high shipping weight. There are tons of lathes on the local used and auction market that are in good condition and will preform far better then anything bought new at a comparable price. Used machines will often include things like DROs, boring bars and 4 jaws chucks that would've cost a bundle to buy new.
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Unread 12-04-2017, 06:04 PM
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Re: Lathe experience or recomendations

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Originally Posted by mman1506 View Post
There's nothing wrong with these mini lathes but I always recommend teams buy used lathes over new.

New lathes tend to be quite expensive because of all the little accessories needed to run them and the high shipping weight. There are tons of lathes on the local used and auction market that are in good condition and will preform far better then anything bought new at a comparable price. Used machines will often include things like DROs, boring bars and 4 jaws chucks that would've cost a bundle to buy new.
It depends on skill level, having a manual and tech support can be useful for teams that don't have experienced machinist especially if you aren't sure of what to look for in a used lathe or know if it's going to work for your applications.

Also a lot of school budget and spending rules don't make it easy to just go buy a lathe at an auction or on craigslist.
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Unread 12-04-2017, 11:40 PM
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Re: Lathe experience or recomendations

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Originally Posted by AllenGregoryIV View Post
It depends on skill level, having a manual and tech support can be useful for teams that don't have experienced machinist especially if you aren't sure of what to look for in a used lathe or know if it's going to work for your applications.

Also a lot of school budget and spending rules don't make it easy to just go buy a lathe at an auction or on craigslist.
+1 to this, mostly. The only exception I would make is for a Hardinge HLV-H. If it looks to be in decent condition then I would trust an HLV to be accurate, more so than any other used or new lathe at least. That being said they tend to go for high premiums so new is often the only choice for teams without machinists.
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Unread 12-05-2017, 02:20 AM
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Re: Lathe experience or recomendations

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Originally Posted by asid61 View Post
+1 to this, mostly. The only exception I would make is for a Hardinge HLV-H. If it looks to be in decent condition then I would trust an HLV to be accurate, more so than any other used or new lathe at least. That being said they tend to go for high premiums so new is often the only choice for teams without machinists.
What makes the HLV-H good for FRC teams? It looks like a pretty poor choice for FRC teams in more ways than one.
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Unread 12-05-2017, 02:43 AM
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Re: Lathe experience or recomendations

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What makes the HLV-H good for FRC teams? It looks like a pretty poor choice for FRC teams in more ways than one.
Why wouldn't you recommend one?
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Unread 12-05-2017, 03:00 AM
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Re: Lathe experience or recomendations

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Why wouldn't you recommend one?
Your paying a high price for features an FRC team doesn't need. Because it's a precision lathe it has a small spindle bore and is usually setup for a collet chuck which isn't all that useful in FRC. The CVT is unnecessary and isn't as easy or cheap to maintain as a standard gear setup. The fancy threading stuff will never get used. It's an awesome lathe but it's not the right tool for an FRC team.

It's almost a shame, it'd be like buying a vintage Porsche 911 for driving your kids to school when a Honda Civic would do the same job equally as well or better. We do a lot of turning in FRC but it's usually rather straightforward operations, I doubt the majority of FRC team have strayed outside a 3 jaw chuck. For the same price you could buy 2 or 3 perfectly suitable used lathes.
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