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Good news, i found a supplier in my city with all different options for tubes. I think im going with 350x250x16mm

, So bigger and hollow is better.. then how about 400x200x16mm ?

changed Z to 20mm steel plates, gantry is now 2x 250x150x12.5mm tubes. The difference is very big from the first post.

Im going to replace all 300x200x10 tubes to 2x 150x200x10 in parallel + sheet 120x15mm 1 on each side. What do u think?

I will stress relief only Z and xz plate, other part's are too big. I can try vibration stress relief on the long parts. I will have the lands for the rails machined in a local company.

There is only 400x200x16 in my city, and the others are very big.

Check this steel beam, my local supplier have it available. HEM200

I will leave them empty

But with fly cutter the face will be always in one plane, or I'm wrong

Well, I wanted to save money and flatten its own 5 legs by removing one by one and put in on the others 4. First rough with face mill and then fly cutter. Fly cutter will make it perfectly flat even...

Hi Craig, I think it is better to fill it with concrete rather than being empty. I will see if I can handle bigger tubes, the only problem is cost.

Hi Peteeng, when using the fly cutter, Z will be...

I will continue to work on the design. Thanks a lot for ur advices.

Yes i want to cut steel. Gantry is around 750kg, will it flex with 0.1mm depth of cut?

There are only a few machines with this working area or bigger in my country, and they charge so much for...

I want to use this bt40 spindle, do you think it can handle 350mm fly cutter, speed is not important, just to do the job.

made a few changes. Total weight became 3000kg from 2500kg. On the last picture there is a standart router, which looks like a toy next to the monster :D

(my previuos router, almost the same as...

Changed Z axis a little bit to steel tube 250x150x12.5mm and 650mm long.. a little bit better result and i like more this design.. Must make cut in the tube so i can machine the plate inside on which...

1000N at spindle tip

yes 300 high and 200 wide, i have simulation, those are the steel available at my local store

tell me where to add load how many kN and i will simulate the deflection.

I have 2x 150x250x12.5mm...

added more steel to the gantry. Internal bracing will be added. Do i need to upgrade the gantry tube, it's now 300x200x10 for example to 2x 150x200x10 welded together

this is for 63mm facemill cutter with 4 cutting edges.. recommended chip load for the cutter is 0,15mm per tooth. depth of cut is 1mm.. with 100mm facemill will be 2 to 3 times faster since it will...

i dont have motor with brake nor with double shaft. How about a relay that disconnects the stepper motor from the driver when power off and short circuit the motor. Maybe will add counterweight if...

im worried about Z with servo because it weights around 150kg. How about 2x servos on Y and steppers on Z and X, or it is not good idea.. I already have 10x nema 34s

are 750w fine for the job? 2.4nm at 3k rpm or 24nm at 300 rpm with 10:1 gear box. How about X. Can i connect the servo direct to the screw without gearbox.

calculations are right. so 10:1 is what i need. How about the holding torque for X when we increase pitch size does it become half?

It looks that I dont have enough torque to move the gantry?

thanks for joining Peter. I saw Haas routers have 4 cars on each side, the machine will cut only steel at 100-200mm/min, also gantry+Z axis weights around 400kg

planned spindle speed max is around...

Im designing my router for cutting steel. this is going to be my 4th machine, before that i made 2x routers 2500x1500 working area and 2 small machines. The idea of this machine is to fit a normal...

Hi, there is local seller of these machines, he says they are made in China. I can't find any information in google for them. If u know other places where they are sold, please share.

In my country new steel costs 1.4 euro per kg. they buy scrab steel at 0,2-0,3 euro per kg depends on thickness. I asked for discount but they cant make.

There are some T-slot tables for selling near me. What do you think to use it as a frame. size is 2000x4500mm.This is a bit bigger than i need but there isnt other size. Price is 5500 euro. 10 tones...

I thought our country doesnt have big ovens, but actually we have some very large. The nearest is within 100km with size 4000x4000x1000mm. I asked for price...

thanks peeteeng i will re design my construction. i will try to find some1 to do the reliev..