Quote Originally Posted by JW1977 View Post
Dont u Think that large 34`s are a bit overkill for my setup?
If you are running 2 screws connected together with belts which you said you was then no it's not at all.

You like others think that because Mdf is soft it's easy to cut, which it is. But what you don't realise is that while easy to cut it requires feed rates which are fast so you require certain amount of speed from steppers. Now because steppers lose torque when speed rises and you have one motor turning 2 screws along with drag etc from belts then you'll need the extra torque 34's provide.

I'm not guessing on this I build these size and type of routers all the time and I can tell you without doubt that 3 or 4Nm nema 23 cannot handle 2 screws connected with belts on well built machine and give you feed rates enough to cut MDF properly and reliably without chance of lossing steps under load.

Cutting Ali is easy enough provided the machine is strong enough. It's achieving the correct speeds for woods, mdf which catches people out. If you don't have strong enough motors then you'll have to lower feeds so don't stall or miss steps. If you do this too much and can't reach correct feed rates required for cutting then tool wear and finish suffer.
Really has nothing to do with Hobby or industrial usage. It's just case of selecting the correct motors and components so they work together and give balanced machine that will give feed rates required for range of materials you intend to cut.

If you want a hint to which motors then here's one.?. . . . Square ones.!! . . . . . Seriously how can we give you a clue without you give us clue to how machine is built.!. . . Is it built from Tissue or Cast iron.? Does it's use Skate bearings or levitation for linear motion.? So many factors come into play that without a clue it would be wrong to recommend sizes etc.