Search:

This is what I cobbled together to utilise the spare engraving spindle (the one I'm holding) which came with, but didn't fit, my Gravograph IM3, and subsequently used for micro-machining with my own...

Found a receipt with some drills I got from her last year and on that occasion she had purchased from covington-engineering.com in the states I know she travels to california regularly so a place to...

google is your friend https://www.youtube.com/watch?v=itMhq8js8qc

I use my red vertex if I have a lot of large holes to tap, it adds about eight inches plus tooling under the quill and the reverse isn't very sensitive, I use it on a floor standing mill drill that's...

The red vertex is for drill presses and is pretty long, I have varying degree of success in using it on my knee mill. You will need to drop the speed to around 100rpm and use machine taps with a...

Going by the hydraulic fitting chart I have, inside diameter of 12.5mm would likely be M14x1.5, or 12.9mm would be 9/16"-18 UNF. The chart only covers BSP, UN, NP and Metric threads though.
....

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...

http://uk.rs-online.com/web/p/multicore-industrial-cable/6600460/ This is might not be heavy enough ..Clive

If you want to make a through neck bass or 8 string guitar without having to move the blank in between machining, the work area needs to be 1200 mm long, the 600 wide is okay.
But because the neck...

The are m6 in the carraiges and 4mm tubes with 2.5mm id

We only drive each Nichia at 1.7a each. That is the max the Data sheet recommends. We never tried wiring 2 diodes in series to one driver, so I can not answer that question. LD's are expensive to...

Just spotted I forgot to attache the calculations to the previous post - I've attached them to this post instead.

14025

I'll make some general points which I think should answer the questions -...

Depends on what you have now:

If you do not have material the best seems from 8 mm thick material- horizontally do all with chamfer (upper figure)
flip mill back to 5 mm chamfer ready-problem...

We can calculate a decent approximation to the inertia of all the parts in the system using this formula for the moment of inertia of a cylinder:
I=\frac{1}{2}\rho\pi r^4h

Just break down the...

http://www.cabinetpartspro.com/

http://www.mozaiksoftware.com/

http://cabinet-design.software.informer.com/

Great, that explains a lot, as long as your board is wired the same as this one. The way to wire it is to put both transformer windings in parallel and connect to AC1 and AC4. You can ignore AC2 and...

This should help http://www.parkersteel.co.uk/media/pdf/standards/JPSBS0010.pdf I was looking for it yesterday when I wanted to look at how "true" my beam might have been. Don't forget you're also...

Mach3 is only the limiting factor when using the parallel port and even then it's Not really Mach3 it's the Parallel port and it's driver.
When you use an external motion control card all these...

Silyavski If you are thinking of Linuxcnc and need to slave motor on one axis there is a problem with homing that has not been ironed out yet. See here LinuxCNC Support Forum :: Topic: Homing and...

If you don't need slaved motors and using steppers then have a look at the Csmio-IP-M controller or the Csmio-IP-S if you need slaved motors or using Servos with high count encoders and want the full...

Answers to questions:

1) Ballscrews give a very large mechanical advantage. You do not need to worry about the weight of the Z-axis so much. See here. You'll be fine with a generic 3Nm motor and...

Got this email, might be of use to someone.

We have been running a Special Offer Promotion for visitors to the Model Engineering Show in Sandown Park. We have decide to provide this offer to other...

I know you want a machine to do everything but I was thinking about this cheap 2 axis idea.
Hammer mounted in a steel frame, the hammer can pivot.
A linear actuator connected to the top of the...

As I'm sure you're aware, you can improve the response of a resonant system in just two ways - either raise the stiffness to reduce the magnitude of the deflection, or increase the damping so the...