sly's BvS DOJ Build
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sly's BvS DOJ Build Expand / Collapse
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Posted 1/10/2020 3:11:16 PM


Supreme Being

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btw, thanks for posting Waerzengineer. This place is really dead this winter. I'm missing Vert's build progress and general posts a lot. Come on Vert! Let us know what's going on. Also hope THEMAN is making some progress. Any pics would be great. I'm dying here guys!! I'm stuck here and can't do anything.
Post #168039
Posted 1/15/2020 9:51:32 AM


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I feel you... I'm personally always hoping to see updates from Towman's Tumbler now that he has moved the project out of his kitchen and into a garage.

With your Solsylva, have you found you are better off milling 2" of foam at a time, or pre-gluing pieces together and milling a larger depth using your Z-Axis and that long-reach endmill?

Also, along those same lines, what is the depth "range" of your Z-Axis?

Thanks!


-Waz
Post #168055
Posted 1/15/2020 6:14:30 PM


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The depth range is a total of 9 inches. So I could mill 4.5 inches of material with a 4.5 bit length. It would be fairly easy to extend the range if I wanted. I have found that it's a bit easier to just go with the 2 inch foam. But you know, with the side boxes I may try 4 inches of foam just to see how it goes.
Post #168059
Posted 1/16/2020 8:19:00 AM


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Sorry, I didn't think deeply enough about it... (no pun intended)

I was thinking the overall material height would be similar to 3D printing layer height, but really, the limiting factor (for overall print time) of CNC milling is still the actual depth of cut for each pass...right?

and I'm guessing there is a big tradeoff between depth of cut and the resolution of the part...?

Plus... you can't cut overhangs, so milling out of one sheet is probably the best bet anyway.

Call me crazy, but am I the only person who actually enjoys sanding and finishing printed/milled parts?

Thanks for the info!



-Waz
Post #168061
Posted 1/16/2020 2:53:51 PM


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but really, the limiting factor (for overall print time) of CNC milling is still the actual depth of cut for each pass...right?
The limiting factor is being able to have the bit clear the top of the material. Foam is so light it's not really a concern to mill thicker sections. Might have to slow the pace of travel a little but not much. the longer the bit the more chance of flex and wobble coming into play so that would be less accuracy in resolution. But it's not a huge factor.

Plus... you can't cut overhangs, so milling out of one sheet is probably the best bet anyway.
This is the reason I have stuck with no more that 2" at a time. If there is a curved shape that would be an under cut it will cut straight down and not make that curve. If I have several layers to put together each layer will start at the next spot in the curve. So, over several layers I can see the angle of the curve and just remove the extra material by hand. I hope I have explained that clearly.

The reason I use an up spiral bit is that it throws the cut material up to the top where the dust collection vacuum removes it. Even with that the foam makes a lot of dust, and it's statically charged so it sticks to EVERYTHING.
Post #168062
Posted 1/17/2020 10:20:40 AM


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Cool stuff!

You don't still have digital copies of your Solsylva plans, do you?


-Waz
Post #168073
Posted 1/17/2020 8:42:00 PM
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sly,
"The reason I use an up spiral bit is that it throws the cut material up to the top where the dust collection vacuum removes it. Even with that the foam makes a lot of dust, and it's statically charged so it sticks to EVERYTHING."
Hey sly,
Ever think about fabricating a machine enclosure to control most of the dust.
You could build your self one for 1-200.oo.

Here is the information on the enclosure for the HD5 Shark that go for 600.oo
The CNC Shark Enclosure is designed to help control dust, add safety, and reduce machining noise. Made from Aluminum, Plexiglas and all steel connectors, the CNC Shark Enclosure is designed to give years of service. Convenient hinged access door with magnetic catch allows for easy material removal or bit changes. Pre-drilled 3” hole for cords allows for the case to be placed on any flat surface. The CNC Shark Enclosure works well for schools, trainers or anyone needing additional safety during demonstrations. Fits all CNC Shark HD Models except Slim Line or HD extended, also fits older Pro and Pro Plus models as well as it can also be used with CNC Piranha XL


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Post #168077
Posted 1/18/2020 12:48:00 AM


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Oh Vert! You know I'm broke right now but you keep tempting me.
Post #168080
Posted 1/18/2020 12:50:07 AM


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PMed you Waz
Post #168081
Posted 1/20/2020 4:15:31 PM


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Last Login: 4/10/2020 10:09:42 PM
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slysnake (12/7/2019)
Batmobile budget is temporarily depleted right now anyway because I added a new car to my collection, a 2002 Ferrari 360 F1 Spider. Come to think of it, this may be a better donor for the DOJ Batmobile because it's rear engine. Ummm…. maybe not.

Batmobile

Batmobile

Batmobile


Dont even think about touching that Ferrari haha.
Post #168100
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