Messages

1

Show"N"Tell ( Your Machines) / Re: 4th Axis for CNC Router

« on: November 16, 2009, 09:02:38 PM »

I found a place on the web called the Little Machine Shop.  The rotary table boasts a 10 second backlash. I see this as .5 degree.  This is OK as long for some applications if you keep the rotation one way. If you are willing to spend a little more the Sherline is the way to go. Good luck

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Show"N"Tell ( Your Machines) / Re: My New Router Gantry Build

« on: November 16, 2009, 08:52:52 PM »

The project looks great however the extra weight might compromise the function. I chose the aluminum for the lighter weight. It cost more but it takes less power to move. I would like to see the outcome as I am designing a larger unit and steel might be a factor for strength.

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Show"N"Tell ( Your Machines) / 6 month build

« on: November 03, 2009, 11:06:45 PM »

I purchased an Elumatic CNC for work and was looking for tooling information when I stumbled on to this and other sites for hobbie CNC. I  decided on a table size of X 39" Y 25" Z 4" . I was successfull in the electronics and PC functions working as intended at startup. The Mach3 software was simple to negotiate. I have since added a 4th axis ( rotary table) and the spindle controls. This project was 6 months from start to power on. The best method for learning the operation is to design a project and understand the functions. Early in the process I do have to admit I did have to make some parts more then once.

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Show"N"Tell ( Your Machines) / Re: more stupid questions bits and end mills.

« on: November 03, 2009, 10:40:26 PM »

I have found that center cutting 3 or 4 flutebit for plunge applications work best.Carbide cutters are more expensive however you get the bang for the buck with bit life. A single flute straight bit still cuts wood the best as chips are removed quickly. Ball nose bits preform well in carving applications. My experiences are from trial and error with differant materials. I have been machining both aluminum and wood. Pay attention to depth of cut. Some materials also require specific router or spindle speed. Plasitic and aluminum so far.