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On my Old machine I used similair setup with approx 35 x 16mm strips but I'd suggest thicker material 20mm min depending on support spacing.
Now this worked OK but in all honesty I found it to be...

To give you an idea I recently built a Slaved axis 4x4 router with 20mm Dia 10mm pitch screws 1700mm length Fixed/Fixed ends with 2 x 3.1Nm steppers running 70Vdc on EM806 digital drives. It safely...

To work out the critical speed of a screw there is a calculator on our site.
http://www.zappautomation.co.uk/index.php/ecalculators.html

In the lower part of this page is a link for the...

Oh very hard to answer because depends on the end fixing etc but I wouldn't go above 2000mm and at that I would have Both ends with Fixed bearings and slight preload on them. When I build 4x4 size...

Don't be in a rush to go too fast regards Velocity. Overtuning the motors is very easy and will result in lost steps and positional error if over done.
Also it doesn't always make for faster cycle...

Hi,
:toot:Don't make it more complicated than it is. And RTFM:toot:. Read the manual i mean :thumsup: Ok i read it for you so:

What you need to make all work in real life and what you would...

Please read this, i posted some pictures so you could identify the cutters http://www.mycncuk.com/threads/8326-Fine-detail-Wood


Basically even if the machine is not rigid- 16000 rpm, 60ipm, 2...

Joined the red and orange together and got 54V AC across the black and yellow, so that is the correct series connection.
15163

I cut the red and orange cables back to leave about 60mm showing,...

If you have one just for testing sake then try a 10amp Mcb it may work for you to get going and check all the sytem correctly.
Don't cut corners with the electrical safety or hot wiring system just...

I need a re-cap on what your using for the main PSU.! . . . Safety relay won't do anything for inrush current if your using toroidal PSU.
If PSU is toroidal then try a D rated MCB.!! . . . . But...

If you make the 10mm steel base a bit bigger than the strips you can put sides on it and then a drain in one corner and if you use coolant then you can drain it.....if you're not going to use coolant...

Since there is no requirement for a venturi or pressurized container almost anything works, I just used an old NOGA that I had.

I made it for myself, I have no commercial intentions whatsoever. I...

I know silyavski told you No but he's Wrong it most definatley could whip at that length at higher rapid feeds. 20mm is much better screw to use at this length and won't cost much more in either...

Hi, good luck with your build!



No.You can but i wouldn't. The correct belt for this build is 15mm HTD . The correct Nema motor has 8mm shaft. The desired pulley is steel 20t. Belt length...

The bed looks quite low on this, you may find the z axis is unduly extended if cutting mainly sheet material. That said I don't know what you plan to cut? Looks like a nice strong frame, you will...

Hi Pete welcome back. Good to see you didn't rush in and waste your money.

With 2K you'll build a very capable and nice machine. Unfortunately there aren't any plans worth looking at in my...

Thanks!
Yes, i welded the whole assembly, in fact all on the machine is fully welded except the Z assembly, which is spot welded almost fully-spot by spot each next to the other.


You mean how i...

ps. Forgot to tell you. The 3 FLUTE CARBIDE ENDMILLS - 0 HELIX Kyocera Tycom he sells are brutal. I use the 1/4 constantly and could say its the best ever router bit for wood i used. Now i saw that...

What spindle are you planning to use? I know there were a few mentioned but cant see which one you decided on.

The thing to remember with spindle bearings is the amount of pre-load they have which...

Nah at this size don't bother using differant size screws just go with 16mm all round and use 10mm pitch for X & Y 5mm on Z axis.
Critical speed isn't an issue if using steppers as you'll never get...

Thats looking excellent and will be a very strong capable machine. Only thing I see that you dont show is any scope for adjustment between the moving table rails and the gantry upright rails.? (Or is...

If you use machine tooling plate and profiled linear rails then it's not very difficult to build a very good Z axis with just a Bench saw and drill press.?
Tooling plate removes any need for...

Neil it's the 70-75Vdc limit of the drives that causes the problem with Nema34 motors. Larger motors need 100V+ to get decent speed out of them and that's why High power 240 Drives are best. Now with...

I'll save you a lot of headache and just say use 3Nm motors run at 65-70Vdc on 75-80vdc drives and you won't have any problems cutting anything.

Cutting speeds will depend on many factors like...

Hi,

Sensible thinking on the others and credit to you for doing research before jumping in and having ago your self with design, wish others would do the same.!

Your design like you say is a...