If you talk to taig, they recommend a breakin with the slide assembly with a fine abrasive to lap all the parts together. When done properly as per their instructions,they work very well indeed. I feel that the gib adjustment screws are too course for easy adjustment, but with care can be acheived. It is just a very small movement on the end of the allen key between sliding and being tight.
It does take time to lap in the slides, but is well worth it.If it is tight in an area , it will need more lapping in that part. 8/10,000 inch error in the extrusion is enough to cause it to bind. By their nature, extrusions are only as good as the die correctors and the people running the press.Over a 1m length is it not unusual to see as much as .002 inches of error in a 3/8 or 1/2 inch thick extrusion.
It has been mentioned before somewhere on the forum in the last 3 years.
I do not have to use a rack to slide the carriage back and forth, but a rack or leadscrew does give distance control.I am not saying to do turning without a control of the carriage, but it can be done when everything is correct.When I set a dti on my carriage against a test bar, the movement in the carriage from end to end is set to about .01mm
With this amount of clearance it slide very well with no issues. Wood dust is more of a problem in the cause of a slide binding due to the fact that the taig type setup does not have wipers front and back on the carriage.A vacumm cleaner fixes that for the most part.
Another issue is having the lathe correctly leveled and mounted. Some need to be slightly twisted to get everything to zero, others don't. The twist may only be .25mm (.010 inches), but it all makes a difference.
There is more to setting a lathe than most give it credit, again there have been some great posts explaining how to do this in the forum.
By the way, the lathe needs to be leveled and properly set before you start the lapping process, it is in the taig instructions somewhere.
I don't like seeing people taking shots at others that are helping the industry.
Issues should be resolved off the forum or in PM to others that may be able to help.
Sometimes things just don't work even brand new, like the new computer at work last week. Tons of problems with it. Turns out it had a bad power supply and a bad cooling fan assembly.It was not a cheap machine from some unknown assembler.All the parts are well known in the industry to be very good with a very high reliablity.
End of rant.
Neil
That's Ironic I just had the replace the PSU in one of My PC's last week also. The bearings in the fan had been going bad, and making noise, and I was able to keep It going for a while by lubing them periodically, but It finally went out, fried the supply, and the PC would not power up. Luckily I had another one in a parts PC that is getting me by until I can order a new one. had It back up and running in about 15 minutes.
Lapping the ways is a good point, I made the mistake of not doing that when I first got My little milling machine. It locked up, and I stripped the brass lead nut trying to get It free.