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- Jan 25, 2015
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- 2,554
The ways won’t ”look” worn, its an even and consistent wear across an area. Any dings or dents are usually from things like dropping the chuck when changing them out, chuck key slipping out of your hands, material slipping out of the chuck when loosening, etc. That kind of damage can usually be stoned flat.
Along those lines, I would recommend you get yourself a 1/2” or 3/4” chunk of plywood that you can slip over the ways and under the chuck to protect the ways in case the chuck slips out of your hands when swapping them. It will happen eventually, no matter how careful you are. Best just to slip the plywood in place to protect the ways and not take the risk. Ding the plywood, not the ways….
Its the “dip” in the ways from running the carriage back and forth over the same spot that is typically classified as “wear”.
To check the ways for wear, you need to drop a machinists rule on them and check them with feeler gauges under the rule. How much clearance will indicate how much wear they have.
axa vs bxa is basically just sizing. If the lathe can handle the larger size, you’re typically better of going larger. My TH42 is a 10”, so axa is about as big as you want to go there. I could cram a bxa on there, but little to anything would be gained as it would be oversized. A 12” might be appropriate for a bxa post, someone else will have to chime in on that one.
The other thing that cones to mind is setting the lathe up. You want to make sure theres no “twist” in the bed.
Basically, the length of the bed has to be in line with the headstock or you can end up cutting tapers and such. The molo has a procedure in it for setting the lathe up with a machinists level. The molo will call it “leveling” the lathe, but what its doing is making sure the ways are true to the headstock.
Note that a machinist level is not the same as a carpenters level. A machinists level is much more precise than a carpenters level. A carpenters level isn’t sensitive enough to do the job to a tolerance that is acceptable. I use an older 6” Starret machinist level. You can pick them up for around a hundred bucks of so and they will do the job just fine. You can find them for less if you shop around and are patient….
Along those lines, I would recommend you get yourself a 1/2” or 3/4” chunk of plywood that you can slip over the ways and under the chuck to protect the ways in case the chuck slips out of your hands when swapping them. It will happen eventually, no matter how careful you are. Best just to slip the plywood in place to protect the ways and not take the risk. Ding the plywood, not the ways….
Its the “dip” in the ways from running the carriage back and forth over the same spot that is typically classified as “wear”.
To check the ways for wear, you need to drop a machinists rule on them and check them with feeler gauges under the rule. How much clearance will indicate how much wear they have.
axa vs bxa is basically just sizing. If the lathe can handle the larger size, you’re typically better of going larger. My TH42 is a 10”, so axa is about as big as you want to go there. I could cram a bxa on there, but little to anything would be gained as it would be oversized. A 12” might be appropriate for a bxa post, someone else will have to chime in on that one.
The other thing that cones to mind is setting the lathe up. You want to make sure theres no “twist” in the bed.
Basically, the length of the bed has to be in line with the headstock or you can end up cutting tapers and such. The molo has a procedure in it for setting the lathe up with a machinists level. The molo will call it “leveling” the lathe, but what its doing is making sure the ways are true to the headstock.
Note that a machinist level is not the same as a carpenters level. A machinists level is much more precise than a carpenters level. A carpenters level isn’t sensitive enough to do the job to a tolerance that is acceptable. I use an older 6” Starret machinist level. You can pick them up for around a hundred bucks of so and they will do the job just fine. You can find them for less if you shop around and are patient….
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