Sturdy and Fast all Steel CNC , my first build

[Lee Roberts]

Thanks! Great forum :-) and a lot of help.

Hi,

Your welcome Silyavski, from your build log came great discussion and realisation for others.

So, thank YOU for sharing your adventures and returning help to others, the results are a great forum and community.

In unity everyone can be successful, this is my original goal.

.Me

[HipoPapi]

Hi,

Thanks for shearing your design and experiences is looking really good so far. I am planning to build a similar cnc router with a working area of 1100mm by 600mm and 250 on the Z. I still have to figure out how to solve the z axes as the longest bit that I need to use is 250mm by 22mm dia and has to be able to travel on top of the 250mm material block.
I have noticed earlier that you had some issues with temperature changes which has me a bit worried as I need to build the machine at normal temperature but it will have to work at -5 degrees Celsius. Common sense tells me that since it will be in there all the time everything will shrink at the same time so hopefully I should not have problems.
Could you please tell me how much this project cost you so far everything included.

Thanks again for shearing.

[Boyan Silyavski]

Hi,

Thanks for shearing your design and experiences is looking really good so far. I am planning to build a similar cnc router with a working area of 1100mm by 600mm and 250 on the Z. I still have to figure out how to solve the z axes as the longest bit that I need to use is 250mm by 22mm dia and has to be able to travel on top of the 250mm material block.
I have noticed earlier that you had some issues with temperature changes which has me a bit worried as I need to build the machine at normal temperature but it will have to work at -5 degrees Celsius. Common sense tells me that since it will be in there all the time everything will shrink at the same time so hopefully I should not have problems.
Could you please tell me how much this project cost you so far everything included.

Thanks again for shearing.

Sorry have been busy. I have all mounted and finishing electronics and cables.

-So it seems there will be no problem following the design and making 250-300mm Z. Most wisely it seems is to make the sides of the construction deeper, by making the stairs like profiles a bit longer and the Z, keeping everything else same.

-2700-3200eur in materials, depends on how you deal with customs. using quality cables and so.



Now i before i update with pictures and details i have a question. Please sb. help cause my ignorance here is astonishing! I thought all was simple and obvious, but...

I have a toroidal transformer 2x50VAC and Power Regulator Board PSU. So one side of the board says AC1 AC2 AC3 AC4. Here i connect AC1, AC2 to the 50VAC1 and AC3,AC4 to the 50VAC 2.
At the other side it says VDC+ VDC+ Ground Ground Ground VDC- VDC-, so as i need 70VDC i connected Both VDC+ together for the + and both VDC- together for the -, but now i gave 140VDC measured between + and -. What i am missing??? i remember the time at school when + was + and -was-, something changed these years or what?





PS: PSU problem resolved, Neale helped me here http://www.mycncuk.com/threads/7659-...9481#post59481