Tuesday, May 16, 2006
And some gears not so good
With an enormous "Kerrrapppp!" I stripped the gearbox on my extruder. When assembling it, I managed to push the drive shaft into the gearbox a little too far without noticing. The last gear was then only half aligned with the previous gear, and when I powered it up it ripped half the teeth off. Bugger, as we say in New Zealand.
So, next attempt will involve reformatting a Black & Decker 6V electric screwdriver - my rechargeable DSE screwdriver is far too nice to sacrifice :) Simon reckons it'll do well if the PWM output on the extruder is set to 50% but holding it in place is going to be interesting.
Still, lesson for Forrest on gears - make 'em wide and strong as the ratio increases!
Vik :v)
So, next attempt will involve reformatting a Black & Decker 6V electric screwdriver - my rechargeable DSE screwdriver is far too nice to sacrifice :) Simon reckons it'll do well if the PWM output on the extruder is set to 50% but holding it in place is going to be interesting.
Still, lesson for Forrest on gears - make 'em wide and strong as the ratio increases!
Vik :v)
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Still, lesson for Forrest on gears - make 'em wide and strong as the ratio increases!
I hear ya! Got any rules of thumb?
I hear ya! Got any rules of thumb?
I've no rule of thumb, but I do recommend saving plastic by perforating the gears with lightening holes or spokes, maybe indenting the region between the rim and the collar on one side. This makes them print faster, and you won't loose any significant strength - the teeth are the weak part.
Vik :v)
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Vik :v)
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