Rotozip or Laminate Trim Router for the spindle?

[minorthreat]

At 155$ The super PID seems hard to justify.

You could just pick up one of these http://www.amazon.com/MLCS-9410-20-Amp- ... m_sbs_hi_2 and control the knob with a hobby servo... Ghetto, yes. Cheap, also yes.

[edwardrford]

I am not sure how to calculate, but do you worry if that may be too much torque for the makerslide and carridge?

I think right now, my limiting factor is the nema17 motors. At only 60oz/in, they just don't have enough torque to push the router through the material at high speeds with a deep (1/8") depth pass. The setup looks to be reliable at up to about 70-75ipm. Above that and I've missed steps in the Y direction.

Now that I've typed it, I'm starting to wonder if that may be due to the fact that I'm sharing a driver for the two gantry motors!? I suppose that would effectively max them out at around 30oz/in each? And it would also explain why I haven't missed any steps in the X axis direction.

Regarding the makerslide/carriage handling the torque: I don't see that being an issue. The extrusions are *really* stiff. Especially considering their orientation and that they only span 375mm. Pushing the gantry hard from the side I can't feel any sort of deflection. The place where deflection is possible is the z-axis, due to it's 'lever arm' nature. But, if you're only dipping a few inches past the bottom of the plate, even that is minimal. Side to side deflection on the Z has not been observed, at least by me.

[CptanPanic]

The reason I bring up the rigidity is I plan on extending mine, and want to add a router like this and need to figure what type of beefing up I need to do.

[MLange]

Now that I've typed it, I'm starting to wonder if that may be due to the fact that I'm sharing a driver for the two gantry motors!? I suppose that would effectively max them out at around 30oz/in each? And it would also explain why I haven't missed any steps in the X axis direction.

Perhaps with a more powerful driver, you'd be able to eke out some more torque.

[minorthreat]

You can eek out a little more torque depending on how you wire the 2 motors up. You effectively have an 8 wire motor that can be wired as ANY of the wiring methods available. BiPolar series should give you the most torque for the current available.

https://probotix.com/stepper_motors/unipolar_bipolar/

[Improbable Construct]

Edward,

Do you have the revised drawings for your DW660 mount?
I looked around but didn't see them.
.DXF would be great if available .PDF would be fine too.
My knockoff rotary tool just converted itself from a crappy rotary tool to a very nice fireworks show!
So I got on amazon and ordered a DW660, it should be here tomorrow!
Thanks
-Brandon

[edwardrford]

Here they are. We should probably put them on the wiki too.

Zipped up, you'll find the .step, .pdf, and .dxf file.

-Edward

[nio]

Here's the picture. As promised. I'll try to get some video tonight while I'm cutting parts!

Edward, could you upload a photo of your shapeoko bed?? i'm trying to build one, but i don't get a stable bed...

Thanks in advance...

[edwardrford]

The bed that's in the picture is worthless. I had this super elaborate design that includes a plasma cut piece of 10ga acting as a slotted table. After assembling everything and giving it a few test runs, I realized I was better off just using my standard MDF wasteboard.

What I need to add are some t-slot tracks on both sides of the MDF. I think just those screwed down to the MDF will be the best solution for now.

Regardless, I'll try to remember to snap a few pictures tomorrow when I'm cutting parts.

-Edward

[gazorp]

The bed that's in the picture is worthless. I had this super elaborate design that includes a plasma cut piece of 10ga acting as a slotted table. After assembling everything and giving it a few test runs, I realized I was better off just using my standard MDF wasteboard.

What I need to add are some t-slot tracks on both sides of the MDF. I think just those screwed down to the MDF will be the best solution for now.

Regardless, I'll try to remember to snap a few pictures tomorrow when I'm cutting parts.

-Edward

I got some t slot and clamps from rockler that i will use in my build: http://www.rockler.com/product.cfm?page ... te=ROCKLER and http://www.rockler.com/product.cfm?page ... lter=45692

I am STILL debating which spindle to get....

Proxxon professional vs DW660 vs wolfgang vs PJ spindle??? Make my own RC? AHHHHH! ToO MaNy OpTions! GaZorP's Head is spinning 30,000 RPM! New idea, use head as spindle!