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Salvaged components.

Posted by Penny Garfunkel 
Salvaged components.
January 24, 2012 02:47PM
I heard you could salvage motors from old printers.. so I did.

This is a list of what I salvaged, pictures included.

This is what was written on the motors:
Mitsumi M49SP-2k
RK2-0107 02
7.5 step 6.4 ohms

  • minebea electronics PM35S-048-BRY2
  • Mitsumi M25N01 R-14 1946 1625B1E
  • RH7-1509 01
    3.75 step 1.5V .8 A
  • Mitsumi M35SP-11NK LF
    38.5 ohms
  • Minebea electronics PM35L-048-NSA8
    RH7-1510 TB4316E
  • Mitsumi
    M25N-1 R-14 1917
  • Nidec RH7-1504
    DC24v 1534.9min
  • RH705317
    43 02 C

Is this good loot?

The rods measure as such:
The two smooth rods, one is 16" and one is 16 1/4"
The two geared rods, one is 11 1/2 " the other is 10 1/2 "
open | download - IMAG0521.jpg (38.7 KB)
open | download - IMAG0522.jpg (37 KB)
open | download - IMAG0523.jpg (50.3 KB)
open | download - IMAG0524.jpg (35.4 KB)
open | download - IMAG0525.jpg (47.2 KB)
Re: Salvaged components.
January 24, 2012 03:56PM
On that topic, I calculated that a gadget (printer or scanner) that has an actual resolution of 2400 dpi, ought to have a positioning accuracy of .01mm, as follows:
Re: Salvaged components.
January 25, 2012 03:14PM
The one in the center of the first picture looks good, but is it bipolar (4 wire) : good or unipolar (5 or 6 wires) : bad
The other motors are cheap and unprecise steppers or just not steppers motors so they are useless to make a reprap.
If you want to salvage stepper motors, old epson printers like the stylus color 4xx, 6xx, 7xx or C86 have at least one good stepper.
You can also salvage opto end stops from printers.
Re: Salvaged components.
January 26, 2012 02:57AM
Are there any other desirable devices besides those particular Epsons?
I know a place with literally tons of computer stuff to be recycled.
If you could give some sort of guide to what's worth looking for, I'd be grateful.
Re: Salvaged components.
January 26, 2012 11:42AM
here is an example of what I salvaged from an epson stylus color 440 that can be used to build a 3D printer:

-1 nema17 stepper motor with pulley
-1 imprecise stepper motor (I said they are useless but I think we can use them on the extruder with a 2-stage reduction)
-1 timed belt
-1 smooth rod (legth = 367mm, diameter=9mm) + carriage with brass bushings
-3 opto end stops
If you are good in electronics you can also salvage the power supply and the stepper drivers but you will need to build a translator to use them.

I also salvaged good stuff in old scanners like agfa snapscan 1212
-1 smooth rod (legth = 427mm, diameter = 10mm) + carriage with brass bushings
-1 long timed belt
- pulley + gears
The stepper motor is too weak to be useful.
Re: Salvaged components.
March 19, 2012 08:48AM

I have an epson stylus 400 eith 2 stepper motors that can be used: em-257
Nominal Voltage 7
Current 0.7
Resistance (Ohms) 10
Torque (in-oz) 44.4
Torque (kg*cm) 3.2
Wires 4
Condition pulled
Steps / Revolution 200
Step Size (degrees) 1.8
NEMA frame size 17
QTY available 4

I also have the electronics from the printer.

how should I build a pursa mendel with these motors?
What electronics should I use? (Sanguinololu, gen7, RAMPS, pololu, etc.)
Iike to etch boards myself
I saw petrus making his repstrap with these stuff. Should I use the Atmega48 to translate steps from the driver? where do I find the driver on the elctronics?

A lot of questions to be answered to build my cheap pursa!!

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