Somehow you knew I was going to respond to this thread right Man that other thread does seem like it goes on forever I have had my K2 for sometime and have gotten to use it a pretty decent amount. I would not say very much but a decent amount.
I think they fill a part in the machining industry as far as price. There is not much out there in this range and price. The one great thing is they stopped producing that awful roller bearing design machine and seem to have gone all too linear bearings. The linear bearings they use, I think, I are VERY nice.
I think in your list of 4 things 2 would be first then 3.
If you get the upgraded ballscrews/ballnuts, which I think would make my machine much nicer then you really could have one great machine (pending all else is up to par like shipping). I wish I had known more or was offered, "hey tauseef, now we can upgrade your ballscrews....". Many times I pass the "upgrade" pitch but in this case it would of been educational. The machine works quite well but you will need to have some tinkering know how, but to be fair I think this would be required on almost any machine you buy. I swear the Sherline is one great machine but it has need it occsional tinker (the customer service is what blows the competition away). I know of a couple guys on the net that are running them 8 hours a day cutting 3D wooden guitars and they say they are doing well (they have their servo setup too).
If I was to reorder one I would consider the following (KG-3925)
- Get extra cross braces; 2 or 4 more. It comes with one in the middle. I
got 2 extra so mine has a total of 5. They didn't charge much at all.
- I would strongly consider seeing if 2 side by side aluminum rails would be possible on the Y axis. That would be awesome. So you would have a total of 4 Y aluminum rails. I don't know if this is really needed thou.
- I am MOST unhappy with the gritty and loud ballscrews/ballnuts that came with my machine. If I recall, when I ordered mine it said Thompson ballscrews but the machine came with Nook. I don't know the difference but assume the Nook are cheaper. I do not know the charge for upgraded ballscrews. The biggest problem is the Nook don't have dust covers but I am working on that myself.
- Some type of dust wipes for the ballnuts and THK type rails would be
nice. The linear bearings and rails are very nice...they have wipers.
Of course this all means the machine would be more. I think for the price it is still a good buy. I have not heard from Ron for many months and only hope the customer service is getting stronger.
Hopefully others will write also that have been using the machine and give a review.
I would not sell my machine as it does what I need it to do and I think it does the job well (hobby based things, like RC airplane parts, rc heli frames, wooden signs, light aluminum work, etc. for me). I have plans to try wood buring with it soon
Hoped that helped.