Hoss's G0704

[mrcodewiz]

Originally Posted by hoss2006 One more rapid test. This isn't a baseline test with Mach 3 at the minimum 25000 Hz kernel speed like before. I ran a cable to a good PC and jumped the kernel speed to 45000 Hz. With the driver at 1/8 microstepping, 300 IPM came easy with the column still on the table. Good enough for me. Here are the electronics used. 570 oz/in Nema 23 Stepper motor, Keling KL6050 driver, 48V. http://www.g0704.com/G0704_electronics.html Motor tuning settings - Steps Per 8000, Vel. 300, Accel. 60. Also shows the motor on the left side of the table as an option. Hoss YouTube - G0704 Max Realistic Rapid Speed

Hoss-

I was looking at your electronics list - on the 'best' setup, what do you get out of the C11G that you don't get from the C10 BOB?

[BAR553]

Pardon the interuption of a newbie post.
First of all let me add my thanks to HOSS and the rest of you for my growing knowledge. I bought my 704, as a result of the hoggin videos, convinced it will do anything i would need.

Somewhere HOSS I think or someon enearly as smart, said that CNC helps you make consistant parts, but does not make you a machinist. I look forward to adding CNC, but I want to learn how to do thing manually first.

So two dumb questions. Why all the need for speed? If you are not in a production environment and have time, do you need it? Second: I thought I would start with a nice easy project like the spindle wrench that Hoss gave the specs for. How does one cut radii, inside or ouside without CNC....... Rotary table? Any good reffernece material that is "how to" anyone can recommend?

Again thanks for letting me listen to the conversations, maybe one day I can add something useful!

[photomankc]

Speed is time so the faster it can push through the cuts the less time you spend watching it do stuff which, I imagine, gets old after the intial WOW of seeing it move on it's own wears off. Fast rapids are nice and all and with an 18" table I would like it faster than slower but most of the time is in the cut and as long as the motors can cut to edge of what the machine allows then you are doing well. I think I'll be quite happy if I can get 20IPM to start with (cutting that is). It would make a lot of work I do go from an all-day task to something I could finish in a couple hours.

I can tell it wont make me a machinist though. In fact, I feel quite dumb right now trying to wrap my head around CAM.

[hoss2006]

Originally Posted by tmbg Excellent. I placed an order for a g0704 and a G0602, but they're both backordered. I figure I'll snag the plans from you so I can keep the wheel reinvention to a minimum. Intending to go with roton screws and oversized balls. I have a Bridgeport clone and an old Clausing 12x40 lathe so the conversion should be a piece of cake.

You should have no problems.
My thinkin too is to keep the big equipment manual and CNC the smaller stuff.
Hoss

[hoss2006]

Originally Posted by mwood3 will the precut stock kit come with the phase 2 plans as well? the link goes to the phase 1 and 2 plans together just didnt spell it out in the stock kit link...

I'll probably just Phase out the stock and hardware kits, too many options
and not worth the trouble.
The phase 2 version barely needs any stock or hardware to complete.
Hoss

[hoss2006]

Originally Posted by mrcodewiz Hoss- I was looking at your electronics list - on the 'best' setup, what do you get out of the C11G that you don't get from the C10 BOB?

that's from Kelings kit, basically the C11G has a charge pump and spindle control built in.
Hoss

[hoss2006]

Originally Posted by BAR553 Pardon the interuption of a newbie post. First of all let me add my thanks to HOSS and the rest of you for my growing knowledge. I bought my 704, as a result of the hoggin videos, convinced it will do anything i would need. Somewhere HOSS I think or someon enearly as smart, said that CNC helps you make consistant parts, but does not make you a machinist. I look forward to adding CNC, but I want to learn how to do thing manually first. So two dumb questions. Why all the need for speed? If you are not in a production environment and have time, do you need it? Second: I thought I would start with a nice easy project like the spindle wrench that Hoss gave the specs for. How does one cut radii, inside or ouside without CNC....... Rotary table? Any good reffernece material that is "how to" anyone can recommend? Again thanks for letting me listen to the conversations, maybe one day I can add something useful!

Basically as photomankc said, speed is money. Sure it's not as important for a guy just as a hobby.
Newbies should go slow anyway. You need to worry more about getting a good part
than getting one fast. When I put someone new on a job in the production machine shop I was foreman,
I told them to take their time, speed will come with practice.
Same goes for CNC, you don't run your first part with the machine maxed out,
unless you're fond of crashes.
If it's a production run, you increase speed a bit after each good part.
A rotary table is a good tool to have around, lots of uses for it manually
and then could be converted to a 4th axis for CNC.
Have a bunch of links here for some educational materials.
http://www.hossmachine.info/forum/ya...n-Newbies.aspx
Hoss

[mwood3]

Originally Posted by hoss2006 I'll probably just Phase out the stock and hardware kits, too many options and not worth the trouble. The phase 2 version barely needs any stock or hardware to complete. Hoss

lol, ok lets try that from a different angle...

if i buy the stock kit now, will it include both the phase 1 and 2 prints?

[mrcodewiz]

Originally Posted by hoss2006 that's from Kelings kit, basically the C11G has a charge pump and spindle control built in. Hoss

Will those steppers run at the full 7 amps or is that the most they can take?

[photomankc]

Originally Posted by BAR553 Second: I thought I would start with a nice easy project like the spindle wrench that Hoss gave the specs for. How does one cut radii, inside or ouside without CNC....... Rotary table? Any good reffernece material that is "how to" anyone can recommend? Again thanks for letting me listen to the conversations, maybe one day I can add something useful!

Yeah, the rotary table is handy (well required for circular cuts without CNC) for circular cuts as well as indexing and also for angles. The way I ended up using mine most often has been for making angled features. It makes cutting at an angle a snap (after setup). Setup time is the biggest pain with them. Cutting an arc and finding a way to accurately position the table, and the stock to do so is not dead simple.

[hoss2006]

Originally Posted by mrcodewiz Will those steppers run at the full 7 amps or is that the most they can take?

In kelings package the X and Y motors are rated 3A and 4.5A for the Z,
The driver CAN put out 7A but you'll have to use current set resistors to get down to 3 and 4.5. They show it in the manual.
Hoss

[mrcodewiz]

I have never used the Geckos before - looking at the manual, it says you need a heatsink if you go over 3A. Is that something you have to get separately?