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Hi folks,
I am moving overseas, and need to ship my mini mill and mini lathe in a container.
Any advice on how to pack them will be greatly appreciated. I do not have any of the original packing...

Hi Allen,
Thanks for the response.
I do have the user manual, and it was not very clear.

However, I played with the switches, and have answered my own questions.
Here is what I did, and it...

Hi,
When you auto tune DM556 or other Leadshine drive, I understand that you need to flip SW4 from up to down and back to up within a second.


Before you flip sw4, what should be the positions...

I too have a couple of these drives, and they work well at 36 - 40V on 3Amp motors without overheating.
I would love to know your solution to replacing the unreliable screw connections, before I...

Finally got some scope traces.
40 V linear PSU feeding stepper driver thru one Ohm 3 Watt resistor, scope channel one on power supply end of resistor and channel 2 on driver side.
Driver set to 3...

1. Your chopper frequency can be anywhere in the range of 20 to 100 Khz.
2. Chopper frequency and step rate can interact to create complex waveforms, and harmonics
3. A simple frequency meter...

Stepper motors are very different from regular series motors. A regular motor is a rotating device. Give them power, and they rotate. Increase the load, and they slow down just a little, and take...

The current draw is exactly as I predicted.
Stepper motors do not take any more current under load. Your axle motor will take more current as you start cutting, but not the steppers.

I noticed...

Jim,
Agree with you 100% on the speed.
I will take the measurements at a very low speed, since when stationary, my drives will go to lower holding current.

Also agree that when spinning, even at...

Jim,
A chopper type stepper motor drive work just as a switching power supply. The current taken from the input power source depends on the voltage.
Here are the specifications printed on my Laptop...

Folks,
The Ampearage requirements of the power supply varies with the voltage of the PSU.
If you are using a 5V Power supply with a 3V motor (Ridiculous in practice) then the 2/3 rule applies.
If...

On the subject of Power Supplies, I have seen people use grossly over rated power supplies.
Let's take an example : You have a stepper motor that takes 3 Amps, at 3Volts per winding. That is 9 Watts...

Hi,
I bought two of the "Upgraded 6600 drives" from a California seller on ebay, for $10.20 with free shipping.

Indeed they are based on the TB67S109AFTG chip.
I tested them this week end and...

I have a question and a comment. Why does the thread need to be 2" long? What diameter is the gear?
As for the Threadmill profile, if you can find a Lefthand threading insert of thr right profile,...

The best way to cut threads on a cnc mill is Threadmilling.
Make a single point Threadmill and use helical interpolation G02/03

The Fourth axis outlined here has the following attributes:

1. 40:1 Worm drive for good torque with a small stepper motor
2. Near zero backlash in indexer mode
3. Converting from Indexer mode to...

Hi,
I made a hand drawn sketch showing the configuration I wanted.
Attached is a copy of what I sent to Chai.
Daya.

Well, I went ahead and ordered a pair of 1204 ballscrews for the X and Y axes of my X2. They were ordered on July 31, and I received them on August 18.
The X was 470mm overall length, with a length...

They also sell a smaller 12mm Ballscrew (1204).
Will this be a better fit for the X2 X axis? Would a 12mm Ballscrew be rigid enough for the X axis?

I was on the verge of ordering a 1204 for the X...

Yes, I have already replaced the Y bearing block with a Ball bearing block, lapped the gibs etc.
The purpose of my question was specifically to get feedback on the idea of preloading the table and...

Hi,

I have an idea for X and Y backlash reduction with the stock leadscrews, and would like your comments.
The idea is so simple, there must be a problem with it!
Simply, use a 20 lb gas spring...

This is my first post with images. Hope the images make it.
The red edge on the threadmill is a shim made from a Coke Can!

The threads were made on a 1/4" thick scrap of Aluminum.

Just last week end, I was able to successfully mill a 15/16"-16TPI thead for a ball nut mount on my CNCd X2.
I looked at buying a threadmill, and nearly fell off the chair when I saw the prices....

Thanks for the reply, and your generous offer to send me some.

Hobby Lobby has some .025" sheet, and I will pick some up this evening, and try it. In fact, I have some .032 brass strips, and try...

Hi knudsen,
How thick was the shim, and how did you secure the shim so it did not slide out when the head moves up/down? This seems way easier than even thinking about Brass replacement gibs....

Hi,
I too am very interested in this thread, since I want to replace the gibs on my X2 with Brass.

But, I thought the X2 has 55 degree Dovetails, and not 60 degree?

www.victornet.com has good prices. I just ordered 100 #4-40 SHCS for under $5.00