Screwing around with heightmaps

New Home Forum Things You Have Made Screwing around with heightmaps

This topic contains 22 replies, has 8 voices, and was last updated by Profile photo of Barry Barry 3 weeks, 5 days ago.

Viewing 23 posts - 1 through 23 (of 23 total)
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  • #28518
    Profile photo of Barry
    Barry
    Participant

    I have an idea in my head, just trying to figure out how to make it. Does anybody know how to model water drops? I’ve figured out random heightmaps with Bryce 3d, but it can’t do round water drop ripples. Here’s what a terrain looks like though.
    https://goo.gl/photos/TGpQJKG7bcv51pzz8
    https://goo.gl/photos/E2uvvdKuLFMXQq3B9

    I’m looking for a way to model something like this.
    https://www.pinterest.com/pin/492862752942430822/

    #28521
    Profile photo of Bill
    Bill
    Participant

    Really nice looking! I can’t help, but sure wish I’d thought of it first. 🙂

    #28523
    Profile photo of SomeOldGuyCoding
    SomeOldGuyCoding
    Participant

    That’s really cool. What material are you cutting?

    Last week I was trying out this thingy: http://www.thingiverse.com/thing:1416218
    Wanted to get something that looked like waves.

    There must be some product/software for generating this for CNC work. One of the walls where I work looks like some terrain made with a CNC. The software must be out there someplace.

    Attachments:
    #28534
    Profile photo of Barry
    Barry
    Participant

    It’s just plain 3/4″ exterior grade plywood. The colors are from the glue laminations. I think they use different colored glue to check for coverage at the factory.

    #28537
    Profile photo of SomeOldGuyCoding
    SomeOldGuyCoding
    Participant

    Thanks for the info!

    #28539
    Profile photo of Jeffeb3
    Jeffeb3
    Participant

    I thought a single water dropplet followed something like a 2d sinc function (sin(x)/x). I wonder if you could get something neat by adding a bunch of them together. You could change the phase of the sine function to have it be in different “stages” of the dropplet, I think.

    There was a forum post here a really long time ago where someone was making stls with math in autocad, I think.

    #28603
    Profile photo of Barry
    Barry
    Participant
    #28610

    What I would do is a 2D drawing (photoshop or GIMP), using the “path” tool and draw half of the shape of the droplet viewed from the side, convert into svg and then rotational extrusion in a 3D design software.

    This would only work for one single droplet though.

    Don’t know if my explanation is very clear… XD

    #28611
    Profile photo of Barry
    Barry
    Participant

    Still roughing…

    #28629
    Profile photo of Barry
    Barry
    Participant

    Holy crap! Still roughing. It said it was only going to take about 4 hours to run, that was thirteen hours ago!

    #28631
    Profile photo of vicious1
    vicious1
    Keymaster

    Holy cow!

    #28640
    Profile photo of Barry
    Barry
    Participant

    Roughing finished at 9:40am. Started yesterday at 6pm!

    #28641
    Profile photo of Jeffeb3
    Jeffeb3
    Participant

    Wow. How did it turn out?

    #28642
    Profile photo of Barry
    Barry
    Participant

    I don’t know. I’m not at home.😭

    Also, that was just the roughing passes, still have to run the finish passes.

    • This reply was modified 4 weeks, 1 day ago by Profile photo of Barry Barry.
    #28647
    Profile photo of donc
    donc
    Participant

    Ran across this a while back. http://www.instructables.com/id/Simulating-Water-Drops-on-Wood/
    Over my head but looks pretty cool. Brian Grunblau has two different pretty sweet cnc routers.

    #28648
    Profile photo of Barry
    Barry
    Participant

    Remember kids, when rezeroing your Z, zero off the uncut part!

    #28650
    Profile photo of Barry
    Barry
    Participant

    So here’s the rough cut.
    https://goo.gl/photos/QFKRCMxZRetEh4139
    https://goo.gl/photos/NR6rPJwe5A2PC8rr9

    The texture is subtle, but I kinda like it. Finish cut is going now. Working much better now that the z is the right height! Was trying to cut about 4mm deep before, now only about 1mm, which is what it’s supposed to be doing!

    #28678
    Profile photo of Barry
    Barry
    Participant

    Well, the storms must have flickered the power sometime last night. Lost connection somewhere in the middle of the cut. What it finished looks good though! I’ll post up a pic when I get home from work.

    #28679
    Profile photo of vicious1
    vicious1
    Keymaster

    Oh no seriously?! That sucks. Pretty sure we are all going to by UPS’s before we start a long cut now.

    #28695
    Profile photo of Barry
    Barry
    Participant

    It’s have to be a pretty big ups! I think it did okay even though it quit. I had it running a second finish pass vertically after the first horizontal pass, it died on the second pass. I just shot it with some white primer paint to see how it looks. It’s very hard to photograph.

    #28796
    Profile photo of Jason
    Jason
    Participant

    I put a UPS on my computer that runs my MPCNC… I just use the laser 99% of the time so sizing the UPS is not a huge deal. a 1500VA UPS should sustain a router and a computer for a few minutes during quick brown out no problem.

    #28800
    Profile photo of Barry
    Barry
    Participant

    The computer running my CNC has a built in ups. I think the ramps lost power.

    #28817
    Profile photo of Barry
    Barry
    Participant
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