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.018 is pretty bad backlash. What is probably happening is your z is tight enough that the head stays at the 'top' of the backlash after a -Z move then vibrates down to the 'bottom' of the backlash...

I've had great luck wiht yourtoolroom on ebay. they ship from Canada (Dunno where they are made) but the quality is excellent and the price is reasonable. I will also be trying Kodiak Cutting Tools...

What do you plan on doing with this mill? You say you build race cars, well most car components you would need a mill to make or modify are about the size and weight of that thing... I would look...

Another update:

i'm running only a bottom lip seal, I figure the top is well sealed enough from chips by the motor mount, that i'd let it breathe... This was driven by the fact that if I wanted to...

you didn't get the metaphor.

if you are 'adjusting' the bearing fit, then it isn't adjustable... That's like saying the rim size on your car is adjustable, you just need to have a giant lathe to adjust them...:tired:

So a little update, if this helps anyone:

I took the seals off last night and flushed the grease out as best I could (you knock the bearings out of their races if you pull it apart, so the spindle...

No where in the link did I see the word 'adjustable'. I believe the slit on the side is there becaust that is a split clamp to secure the bearing to the block. a linear bearing looks like this
...

"then I guess the difference may be that the bearings truly have an ID of 16mm but the rods (translated to metric) are actually 15.875mm..."

Seems to me you know what the problem is...Why are you...

If there is actually as much play as you said, you either have the wrong bearings or the wrong shaft. There should be little (if cheap) to no (if good) play in the set.

What direction is the play...

I just did this on mine and here are my experiences.

You can find AC bearings with the same envelope as what's in there. Here is where I bought mine: Bearings - Roller Bearing - UBC Bearing -...

Is that my only option? I thought I could use a board like the c6 in place of the potentiometer that is on the manual motor control board. I suppose the real question is does the c10 board have a...

I am getting ready to convert my LMS SX2 mill to cnc. I was wondering what my options are for cnc spindle control. I understand the pot input is just a 0-10v signal, is there a 0-10v output from my...

I have tried setting the port to a different mode, but nothing... weird thing is, it stopped working without me messing with any of the settings...

so the cable issue appears to be a computer problem, the machine works fine with my laptop. but we (the school) wants to use the machine with the PC... not my personal laptop.

the same limit...

ok, new development; now whenever I plug in the db25 cable from the computer, it disables the BOB. so, without the cable, the red led is on and shining - signaling that the board is enabled. as...

so I put a 10k 1/4W resistor between a 5v source and the input lead (11,12 or 13) on the BOB, now the machine gives me a 'joint # on limit switch error'.

another weird thing, i disabled the estop...

hmmmm....... you're supposed to use resistors.... see, this is news to me. no where that i read mentioned resistors, or really much of anything about the wiring. I will try bridging the leads with...

i realize that normally closed switches are recommended, but the software should be able to work with either.
I am more unsure about the wiring than the configuration of EMC2, i think.

So I am at the point in my conversion when I am wiring up the limit switches. They are normally open switches, so I wired them in parallel; if one trips it should close the circuit no matter which...

you really need to do your homework on this one. AT VERY LEAST: take a manufacturing class, a mechanics of materials class, and a machine design class. a FEA (finite element analysis) class would...

the reduction is what comes stock on the prolights, and we wanted this to be a direct bolt on. Personally, I would like to make it direct drive, but it's not up to me (school project...)

where would i find the frequency of the parallel port?

the max step rate is given at 44kHz in the stepconfig wizard.

the power supply is set at 36V, the drivers are set at 2.7A. what would...

Hi, I'm finishing setting up an old prolight1000 with keling 4030 drivers keling 425oz-in stepper motors (8 lead bipolar running parallel). everything is working, but no matter what microstep...

figured it out.

had to check the 'invert' checkbox to get anything to output. all the axes work now.

can anyone explain why i had to do this?

i changed them but then tho motors wouldn't even lock. what type of parallel port do i need to use in the bios? EPP? ECC?

I'm in the process of setting up my mill. I'm using EMC2 and Keling 4030 drivers with a C10 BOB. I have the axes wired up exactly according to their website, but haven't wired in things like the...

can anyone recommend a free CAM software that i can use to generate G-code? I currently have access to solidworks 2010, but have no CAM software. for reference, I am using EMC2 software.

we really don't even need an encoder. there is no need to thread with this machine, and we would have to buy a new spindle...

I really just need some help with wiring the control circuit, or...

hrm.... no idea what it varies from, I will try to dig up the part number and find out later.

the spindle has no encoder, just a basic motor. I don't need to control the speed too precisely, but...