how many hours do you think your machine has? have you replaced any worn out parts?
Im looking at a used grizzly g0619 mill and g4003 lathe and the guy told me at most they have 2600 hours, this seams like a ton of hours for what seam like hobby ish machines. whats the life of these type of machines?
John [url]http://www.avextra.co.uk[/url] [URL="http://www.cnczone.com/forums/benchtop_machines/143315-uk_g0704_clone_conversion_workshop.html"]http://www.cnczone.com/forums/benchtop_machines/143315-uk_g0704_clone_conversion_workshop.html[/URL]
Dunno exactly but I have owned my RF45 mill and my 12x36 Gear head lathe for more than a decade. I have used them steadily over that time period and they are still working fine. I just converted my RF45 to CNC this past year and it has worn the Z axis Gib strip adjustment slot a tad so I just bought another one. The only part I ever needed other than that was a gib strip for my lathe's cross slide when I messed up adjusting it and wound up breaking it. I got a new one from the manufacturer for less than $20.00 and it has worked fine ever since. I also managed to break the switch for the carriage lever to engage the fwd and rev switch on the lathe but I actually repaired it myself. Other than that these machines have made MANY parts over the last decade and now that the mill is CNC it makes a lot more. Dunno if I answered your question but I use these machines pretty heavily, I would say probably a lot more than the average hobbyist ever would. Peace
Thanks for the responses, i was just curious to see what kind use these machines get. I didnt know if people ran these machines 8 hours a day 5 days a week or just few hours here and there as hobby or light work.
You need to leave us with some idea of your usage and context here. For example you have two machines here, the mill might be called a hobby mill but the lathe is a much more respectable appliance. So you need to factor in how you expect to use the machines as you have a considerable difference in capability here.
In any experience like I mentioned in my last message inspection will go a long way to saving you some grief.
The number of hours is probably less important than how the machines were treated. If they were well maintained, gibs were properly adjusted and the machines were properly lubricated then they'll probably be fine.
Can you inspect them in person? I'd worry more about that then any metrics on how they were used.
I own three machine tools, all of which were bought used. One is a 1949 South Bend lathe with unknown usage history. Like many of these lathes it could have lived in a high school shop at one point. However it is in pretty good shape and still runs great for me.
My Taig CNC mill was used in a small operation that made custom cigar boxes. I fully disassembled it and cleaned it up upon arrival and it's been work great since then. I've upgrade some parts (spindle motor, spindle) to catch up with the new models, but haven't had to replace anything due to wear. I don't know how many hours I've put it on it since, but I'm guessing that the machine has around 1000 hours on it total.
Replacement parts don't have to be that expensive. The main items that I expect to replace on my mill are the leadscrews and nuts. At some point the center of the screws will be worn more than the outsides and it will be hard to get backlash down to acceptable levels. At $100ish to replace all three that isn't a big deal.
I originally joined this site to research more about cnc plasma tables because i plan to build one in the next few months. after researching i started looking at small mills thinking they would give me the precision i need for some of the parts "side plates, motor mounts, gear reduction parts".
That based on my limited understanding of your needs. I suspect the mill is a little to little for your needs. I could be wrong here but when you started talking about a plasma table I started thinking really large parts.
The lathe will come in handy for making that plasma table. A mill would too, dont get me wrong there. I'm just not convinced that the mill will be suitable long term for your needs.
If you can get a package deal with a substantial discount on the mill you could buy it as a temporary solution. Asking about price though is difficult to do over the net, I might say $2000 is good for a package deal but that doesn't reflect the state of the machines nor the going rate.
Here is the kicker; you really need to budget for tooling. Hopefully some will be thrown in with this deal. I can't say exactly how much to budget for but the initial expense is severe enough that you might want to consider buying just the lathe first. Setting yourself up with tools and tooling could easily surpass the $2000 mark depending upon how tool poor you are now and what tooling the lathe comes with.
Note tools and tooling refer to two different ideas. Well for me it does. Tools are things like Micrometeres, calipers, screw drivers, Allen wrenches, hammers hack saws, dial indicators. Tooling for a lathe is referring to things like the tool post, the the rests, chucks, arbors various cutting tools, brackets, fixtures and other things specific to that lathe.
If you dont have the tools and need to acquire tooling, the machines could sit around for a long while looking pretty.
Finally I suggested the lathe but your interst could be more in line with the capabilities of a mill. It really depends upon what exactly you will be making for those jeeps. Or you may find that a cutting torch and a welder are the tools of the day. You see we can't read minds here, however you did mention plasma table which to me implies a need for a welder and most likely a bigger mill.
Thanks for taking the time to leave such a detailed answer. as for the plasma table im just thinking about machining pockets for bearings, counter sinking and slotting aluminum for stepper motors, torch holders, just little things dealing with the gear reductions. Nothing to large and mostly aluminum maybe
I have a decent sized shop that i share my father. we have multiple welders, plasma cuter, torch, band saws, press, drill press, lots of tools, car lift. so i kinda do a little bit of everything so a mill and lathe would add to my capabilities.
Im planning to build the plasma table to cut out larger steal parts for jeeps and sell some metal art to make some extra money on the side. i love the idea of a cnc mill but i have alot of learning ahead of me before that so i figured a small manual one would be best for now.
Ive also been researching a bit on this site and may try and join another site dealing with machining to learn more about tooling and buy a few books.
as for the machines the individual selling the mill and lathe said they were purchased in 2005 (didnt think the g0619 was out then) have about 2k worth of tooling and accessories. were purchesed to make tooling for fireworks, wheels and setpieces mostly, was machinist for the last 30 years. have at most 2600 hours.
The current prices new are $1595 for the mill and $2795 for the lathe. Ive noticed the prices have increased in the last few years so its hard to guess what they were in 05 and what they are worth now. i just kinda wanted a better idea of how long a well kept machine would last and values before i took a look or made any offer.
Thanks for the help so far and sorry if i got off topic or rambled on to much.