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5/11/2008

Build in error checking and adjustment

My machines were assembled and adjusted according to the instructions on the manual. The accuracy and repeatability were good for most manual operations, but not CNC running, especially the backlash problem. Although sherline provides the anti-backlash nuts on all axes, if you want ‘zero’ backlash, you may need to adjust the nut after several runs.

Before dealing with the backlash problem, I decided to check and adjust the machines first.

The major equipments for me to perform checking are:

Mitutoyo No.513-401 dial test indicator
Earth-Chain magnetic base
China made 4”x2.5” square
Riken 6” precision level
SPI 3/8” edge and center finder

And the model of my lathe and mill are 4410 and 2010

Mounting board

First thing I did just after received my machines was making mounting boards.

When I was deciding set up my shop, I have figured out some furniture that would be replaced.That means I can chop down some pieces from them and make the mounting boards.

Some people suggested that, these kinds of miniature machine tools can be fastened directly on the bench top to get the maximum stability.

In my opinion, I prefer to leave the mounting board un-bolt to the bench top. Because, I will level my machines. So leave them un-bolt will let my later work easier.

Also, you may get more chances to use special accessories for your project. (Neither custom make or purchase one) If these accessories are over hanged from the machines, increasing the overall size of the machines,

At this moment, you find you haven’t enough space to install the accessories. You will pleased for didn’t bolt the mounting board to the bench top.




You can see my lathe was bolted on the pine wood board, but the board didn’t bolt to the desk top.

I don’t have socket driver for Hex. Nut, the counter bore holes at the bottom of the board can only fit with the screw head.

I've put the screw up side down, and add some epoxy putty under the flat washer to prevent damage of the bed painting.