thinkaweek

12.23.2009

Trash compactor screws will make a better Z and we will stick with a faster cable or belt drive on X.

A 36" plotter for the last axis has been found.

the lead screw for the table axis. I pulled two long screws out of dads old trash compactor.

A new source for a granite base is old pool tables

Lin Engineering 4218L-01D-02 bipolar stepper motor Item: 28M063 Price: $8.95

makerbot mostly assembled electronics

misc. electronics parts from Mouser and Digikey

Pullys and belts from Stock Drive Products and Sterling Instrument.

Extruder Designs Looking Good

Working 3d drawings just checking clearances

solid base found ( old pool table )

steper motors from the plotter

Engine bipolar

Pitch angle: 1.8 degree

Voltage: 2.8 VDC

Current: 1.1 A / phase

Number of windings: 4

Winding resistance:

Winding key: 2 x 2.8 ohms

Winding Auxiliary: 2 x 26 ohm

Inductance coils: 4 x 6.5 mH

Torque: 0.4 Nm

Overall dimensions: 57x57x78mm

Weight: 0.44 kg

LEAD: 8 wires

Manufacturer: Shinano Kenshi CO., LTD. Japan

Symbol: 52H10

Price: 75 zł

http://translate.google.com/translate?hl=en&sl=pl&u=http://www.elemar.pl/silniki/52h10_sth56d215.html&ei=SMjLSsPRIZfQswPHjcXfBQ&sa=X&oi=translate&resnum=3&ct=result&prev=/search%3Fq%3Dsth-56d215%26ndsp%3D21%26hl%3Den%26sa%3DN

11.09.2009

Paasche Nozzles

I think that I have found a great series of nozzles for the project. The Paasche airbrush nozzles are precise and fairly inexpensive. They have a nice multi angle taper on the inside Multiple nozzle orifice dimensions and sell for around $7.00

The small square ones are from an airbrush. The medium size is from their A series industrial gun and the big one is a C series. You can almost see the nice taper on the inside of the C series.