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I gave up on this boring bar.
I ordered a set of 4 bars different sizes for $17 on Ali express

It comes with 10 inserts and 4 bars
6/7/810mm boring bars...

Hi Dave,
No it is a plain round bar with no marks

edit, I may have posted this in the wrong board
I just saw the metal work tooling board
Admin, you can move this if it needs to be moved?

I recently got one of the Chinses mini lathes
A buddy of mine gave me a bunch of turning tools

I use mainly HSS and grind shapes so I am new to carbide inserts

He gave me a small boring bar...

I would agree with that.
I only used my CNC router as a test unit
I then built a 3D printer from scratch after the initial print head test

The two machines are completely different
CNC machines...

I don't know, I only run 3 axis machines
4th axis once in a great while for turning small custom gears

I went ahead and picked up a Dell D610 on the odd chance I could make it work with Mach3.
They are under $100 on ebay. Very sturdy and compact and they have a parallel port.

Initial test were...

Thanks for this info
I picked up a Dell latitude D610 cheap but it would not pass the driverTest.exe in Mach3
The pulses per second were all over the map and the test failed

After converting...

Ok thanks

Thanks Gerry, let me know
There's a few tricks that can be done if it messes with the Mach3 pulses

I looked over the mach3 laptop success stories post here
http://www.cnczone.com/forums/machines_running_mach_software/53254-mach3_laptop_success_stories.html

I did not see any info on the Dell...

An old thread I know but just thought I would add this one to the list
I am using a Gateway T6345u Notebook computer to run Mach3 on my 3D printer with a Startech pcmia parallel port card and XP SP3...

I am switching 12 volts
The load is around 3 amps

I am turning off the 40 watt heater cartridge to the extruder on my 3D printer
When the print job ends, Mach3 issues a M9

A 2.2k for resistor A ended up working perfectly
I have 2.51 volts at the junction of the voltage divider
So I have a 10k at the top of the voltage divider and a 2.2k at the bottom



I forgot...

My 7amp 12volt Dc power supply is a bit higher than 12 volts

I may have to adjust the values a bit because I have closer to 3 volts at the junction of the voltage divider

Ok your suggestion of adding a NPN transistor to the gate of the FET worked great
The Relay now clicks on and off with M7 and M9

Here's the Relay circuit I am using
203352

Ok, thanks, a voltage divider
I'll see if I have a NPN trans laying around to experiment with

That sounds good but then I have to find +5 volts from somewhere
My 3D printer power supply is 12 volts
The only 5 volts I can think of is the USB port on the notebook

I tried using a 4.7k and a 10k pullup resistor across the ground and output pin
Still no good, the output pin voltage wavers all over the place

I have tried all 4 remaining unused output pins...

I am running XP pro on a gateway notebook computer which is running mach3 and mach3 is controlling my 3D printer with 4 stepper motors
The motors and 3D printer all work fine
I have the notebook...

In Mach3 set port1 port address to 0xEC00
The same as in your parallel port properties screen shot

I have a pcmia parallel port card in a notebook
It came up as port 3 and the port address was...

yeah, I was only thinking that it would be nice not to have to use notebook computer, but that really is not a big deal
There's allot of advantages to being able to do all the things you can do in...

Thanks guys but from the looks of it I doubt I'll venture into the unknown here.
Looks like a ton of new stuff to learn and my time is limited

Also looks like all the hardware you need to get...

Ok looking at your links , there is still nothing I see that explains the big picture.

I am an electronics guy but I don't want to assemble a pc board with surface mount devices.

Next, I see...

Hi Hoss,
I would be interested in doing that also. Finding good info in the 3D printer world has been frustrating. It's spread all over the place and not easy to find good sites that explain things...

Thanks

Thanks

nice, that's a handy feature to have

I uploaded a Youtube vid of the printer printing and some of the objects I have printed


http://youtu.be/cmhIbls4ScA

I am using Mach3 because that's what I know and it has always served me well.

I am not familiar with any of the electronics or the controller software the Reprap guys use.

Mach has some big...

I refined the 3D printer #1 build after using it for a while and built printer #2 based on those refinements

Printer #2 came out really nice and is printing very clean objects compared to the...