Projects 3
Circuit Board Replacement


I had a problem with the X2's circuit board so I was looking for a replacement.
I didn't want to spend $125 at Grizzly or $145 at Little Machine Shop.
I found a 130 VDC 8 AMP MOTOR CONTROLLER BOARD used in treadmills for $30 at
Surplus Center.com.  It works just as well as the original. You even have to cycle the power
switch (4.7k  Potentiometer) back to zero when you hit the E-stop to get the motor to come
back on just like the original. The schematic for the circuit board calls for a 5k Pot to vary
the speed but the 4.7k on the mill works (just shuts off a little slower than before.) Use the
E-Stop to be SAFE! The only difference is there's no hookup for the amber LED.
Surplus Center no longer carries them but do have a similar controller (Item# 11-2269)
that others have had success with even as replacements on the X3 mill. You can get your
circuit board repaired at Gerling Laboratories for about $55 or try it yourself following this PDF.
This webpage also covers the Grizzly G8689 mini-mill motor controller repair which is similar.

Here's some pics
 
x2 circuit board

x2 circuit board

x2 circuit board replacement 1

x2 circuit board replacement 1

x2 circuit board replacement 2

x2 circuit board replacement 2

x2 circuit board replacement 3

x2 circuit board replacement 3

x2 circuit board replacement 4

x2 circuit board replacement 4

x2 circuit board replacement 5

x2 circuit board replacement 5

x2 circuit board replacement 6

x2 circuit board replacement 6

x2 circuit board replacement diagram

x2 circuit board replacement diagram

Harbor Freight 7x10  lathe circuit schematic

Harbor Freight 7x10 lathe circuit schematic


Cable Covers


With all the oil and chips flying around, It is necessary to protect the wiring. I covered
all the cables with Split Flex Tubing. I found some at Lowes in the electrical dept. It
costs about $3 for 6-10 feet depending on the diameter. I used 3/8 and 1/2 in.
Most automotive parts stores should carry it as well. I ordered most of mine from
Wholesale Tool.
To protect the motors and digital scales, I'll make covers from thermoformable plastic
sheet. There are several brands to choose from but just about any plastic will be
formable when you apply some heat to it. I use a heat gun.
I ordered some Pet-G Vivak  from US Plastics, they have good size selection and pricing.
This is a site for Kydex, Interstate Plastics, but they have a $50 min. order or you get
  charged an extra $15 for a small order.
  Small Parts Inc. has lots of plastic as well as other stock i.e. aluminum,brass,steel, etc.
  I'm going to order some Sintra PVC sheet from Foam Board Source.com  too, They
  have lots of choices and good prices and no min. order. Get up to a 4' x 8' sheet
  if you want.
X2 cables covers 1

X2 cables covers 1

X2 cables covers 2

X2 cables covers 2

X2 cables covers 3

X2 cables covers 3

X2 cables covers 4

X2 cables covers 4

 

Toolmaker's Vise Clamps


If you have a precision Toolmaker's vise, These clamps are perfect to hold it to the table.
These are my version based on a set from Little Machine Shop.
 
precision vise clamps print

precision vise clamps print

precision vise clamps 1

precision vise clamps 1

precision vise clamps 2

precision vise clamps 2

precision vise clamps 3

precision vise clamps 3

© 2007 Daniel E. Kemp

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