marker pen driven over an 8x4 sheet help.

[Danny]

Ok im going to summarize the parts so far.


Im building a wooden constructed belt driven plotter using these parts from:

http://www.ebay.co.uk/itm/CNC-Kit-3-...item2a14d75139

i need to choose the correct belt size as in width i take it i can use smaller belt for
the shorter Y and wider for the longer x ...say 10mm / 25mm?
15 tooth pulleys ok?

Are these steppers man enough?

http://www.ebay.co.uk/itm/CNC-Kit-3-...item2a14d75139

3M pitch belt driven with 15 tooth pulley gives you 45 mm of axis movement per revolution of driving pulley. Reducing it further 5x gives you 9mm/rev. Driving it with stepper (after reduction) @1/2 step (400 steps/rev) gives you 0.0225mm resolution. I think its enough for your boat drawing or even for cutting
Driving it directly with 15 tooth pulley @1/2 step will give you 0.1125mm resolution

[JAZZCNC]

Ok im going to summarize the parts so far.


Im building a wooden constructed belt driven plotter using these parts from:

http://www.ebay.co.uk/itm/CNC-Kit-3-...item2a14d75139

i need to choose the correct belt size as in width i take it i can use smaller belt for
the shorter Y and wider for the longer x ...say 10mm / 25mm?
15 tooth pulleys ok?

Are these steppers man enough?

http://www.ebay.co.uk/itm/CNC-Kit-3-...item2a14d75139

These links don't show up for me.?

Regards pulley size I really wouldn't use 15T see post #21 for reason why.! . . . Belts are great but there are some things that must be done correctly or premature belt wear leading to failure is very easy. . .These things are: 1: Correct belt width appropriate to load 2: Correct pully size regards Tooth engagemant 3: Alignment 4:Tension