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Am assuming that you want to monitor the voltage going to your wires. If so, then all you need to do is to install a voltage meter and wire it parallel with the lines going to the heated wire.

The first one is an OEM pot. should work perfect.

3D
Here is the info I have on Payne SCR. It should work for you.

You can rewire the little transformer on the unit for 240vac. (The little transformer at the top in the 1st pic) The name plate says 480vac and that is what the little transformer is wired now. If I...

That was a steal. I didnt see that one or i would have been bidding on it. That is the only type of SCR that we use. Good Job.

I see no problem with the motors and gearboxes. It is all about making sure you cutter's movements (linear bearings or slides) are traveling smooth with little or no resistance. Bigger motors can...

We use Nema 34 motors with 450 oz/in holding torque. We build our gantry with alluminum sq tube and use a counter weight on the Y axis.

Sorry for slow response. Just got back in town. We use 20:1 gearboxes. The gear boxes in the link I saw looks good to me. The 263 oz/in motors should work fine. If the is a problem with the Y axis...

I like to use indiviual driver boards because if one goes out and your in a bind you can just swap out the driver with another axis and your good to go.

Do a search on ebay for nema 23 Planetary Gearbox and you will find them. They cost more than the motors, but I really like to use them on my cutters. I have bought a few things from Anaheim...

My thinking would be in your case bigger is better. You do want to build a fairly good size cutter. I have never built a cutter with V bearings so I might not be the one to really help you on that.

50 amp Payne unit will do it. 1 of our cutters is 12' wide 6' high, and 16' long. we can put 40 wires (.014). we use a 150amp Payne unit and have had the same unit on it for over 15 years with no...

I would think that that stepper set would be fine. You can always put some counter weight on the y axis if needed.
I not sure about the transformer. not really sure what you are trying to do. You...

That depends what you are trying to cut. If you are using 1 wire (tapered cuts), I would think you a good to go, But if you are looking for more of a production machine with 20 or 30 wires, then you...

Not necessarily
You are going to be cutting slow, prob around 20 inm for 1lb foam. The gear box will let you be closer to the middle of the motor rpm range with lot more torque. I always like to be...

Never used the type of linear guides you have chosen, but I can tell you if using bearing a nema 34 stepper with a gear box works well. Motor torque is not real critical when using gearboxes
As for...

Out of stock???
Could not get pricing or add to cart.

The power supply is actually a 150amp Payne engineering scr 240acv input variable output. Voltage depends on wire size.

Here are some pics of how we set the wires. this is a production cutter and we use mutiple wires with a 150amp power supply. We use 2 different types of springs, one is 1 1/4" the other is a 4"...

Attached each end of the wire to a spring the attach the spring to your bussbar.

The problem with Hotwire direct cutters is that it really is not a good production machine.
You can only put 1 wire at a time. Great little units for plane wings and taper fluted columns, because...

Using 2lb EPS can and does produce quality work. you can get it at numerous block molders in the usa. In Texas Starrfaom is about the biggest. I know they have a place in AZ too.

Dan

We manufacture hot wire cnc cutters. We have a custom controller that will run unipolar stepper motors up to 9 amps per phase. They are for use with mach3. Also comes with a joystick.
That...