Gustave Build : Woodworking router

[Gustave]

#1 Wrong statement! I ask Fred for 2520 not 2525 (BST and TBI brand). It was after a call with a technician from Hiwin that recommend to go for 10 eventually 20 pitch but described the 25mm used for fast transport and no milling operation. From this own, 25pitch is less rigid and need to go with larger diameter than 10pitch so I ask for 10 and 20mm...

#3 I already made the expense of an IP-S 3MHz so using servos could be coherent... Perhaps I am too confident with CSLab manual but understand that they only cons are a bit pricy like 2X stepper price if bought directly in china (if AC220v it don't have expense for power supply no ?) and perhaps tricky to tune. Pros : silence, smooth, high torque with increase of speed, no or cheap power supply... do you think it is overkill ?

#4 Even if I have increase X carriage space up to 300mm ? I love the idea that ball screw is protected under the table. I my workshop often carry long wood piece that could hurt the ball screw if I wrongdoing ... Do you have some photos of you double ball screw integration, you keep them under the table, do you conserve the under table Y bar, you use one motor per ballscrew or use pulley system ?... Sorry, I have so much question !

[JAZZCNC]

#1 Wrong statement! I ask Fred for 2520 not 2525 (BST and TBI brand). It was after a call with a technician from Hiwin that recommend to go for 10 eventually 20 pitch but described the 25mm used for fast transport and no milling operation. From this own, 25pitch is less rigid and need to go with larger diameter than 10pitch so I ask for 10 and 20mm...

Ok, I understand now. What the Hi-win tech probably didn't now was the 25mm pitch screw is a multi-start thread so the diameter is maximized. They won't be any less ridged than the 10mm.

#3 I already made the expense of an IP-S 3MHz so using servos could be coherent... Perhaps I am too confident with CSLab manual but understand that they only cons are a bit pricy like 2X stepper price if bought directly in china (if AC220v it don't have expense for power supply no ?) and perhaps tricky to tune. Pros : silence, smooth, high torque with increase of speed, no or cheap power supply... do you think it is overkill ?

Ok but IMO for a Hobby Router they are OTT and far more complex, esp if using the Cheap Chinese Servo's. They also require your whole electrical and wiring system is top notch so they don't get affected by electrical noise etc.
You probably won't use the extra speed they allow and the noise from the motor is immaterial compared to the noise from cutting.!

The smoothness is positive that Steppers cannot match and the resolution they cannot match either. However, Closed-loop steppers still provide more than enough resolution than is needed for most router type operations. Even on Aluminium, they are ok because the Resolution won't be the weak link in this material and the machine is only good as the weakest link.

You can get Closed-loop drives that use Mains power so you don't need a transformer.

My advice is that if your prepared to battle with Motor Tuning and take the care required on the electrical side then go with Servo's because there is no doubt they are superior to Steppers. However, that doesn't always mean they are the best for a given application and user.?

If you want Simple, easy to set up and super reliable with less resolution but still with more than you probably require and with a slightly less smooth operation then go with Closed-loop steppers.

My Choice for a router this size and for Home/small business use would be Closed-loop steppers.

#4 Even if I have increase X carriage space up to 300mm ? I love the idea that ball screw is protected under the table. I my workshop often carry long wood piece that could hurt the ball screw if I wrongdoing ... Do you have some photos of you double ball screw integration, you keep them under the table, do you conserve the under table Y bar, you use one motor per ballscrew or use pulley system ?... Sorry, I have so much question !

Extra length carriage would help but you are still on the edge. You can still have the screws under the table, my design you copied from uses twin screws. Either connected with belts or twin motors, I've done both. However, there are some things I'm not prepared to disclose so sorry no pictures.!!