Tig weld rack and pinion to cnc plasma frame?

[warwick]

HELP!!!!!!
im just coming to the stage to order my pulleys for reduction on the x and y axis.......dean kindly worked out the 3-1 reduction with mod1 rack and pinion.........
iv actualy used mod1.5 with a 24t pinion spur gear..............if i order t5 60 tooth and 15 tooth will this be ok to get me back near the mod1 calculation in the above post???

[JAZZCNC]

It's easy to work out if you know the Dp (Diametric pitch) of the pinion which for 24T Mod1.5 is 36mm. Then times this by pi to give the Linear pitch before ratio which in this case is 113mm.

Now you can work out ratio you'll need to give the desired linear Pitch. 15t/60t will give 4:1 ratio so 113 / 4 = 28.25mm. For Plasma this would work ok.

Ps: Word of warning before ordering make sure 15t pulley will fit your motor shaft because there won't be lot of pulley left for grub screws etc after it's bored.

[warwick]

hi, just a few questions. is 100mm deep enough for a water table? and is there a prefered spacing for the slats??

many thanks