Happy Halloween

New Home Forum Things You Have Made Happy Halloween

This topic contains 18 replies, has 10 voices, and was last updated by  Steve 3 weeks ago.

Viewing 19 posts - 1 through 19 (of 19 total)
  • Author
    Posts
  • #73274

    Steve
    Participant

    Thought I’d give EVA foam building a try. Started building “The Wasp” for my daughter. I love the accuracy the MPCNC gives. Had the laser add the honeycomb detail. As I get more experience I’m going to try using the MPCNC with a  Dremel to crave some shapes, 3D printing on the foam before cutting, and have a wood burner cut patterns on the foam.


    3 users thanked author for this post.
    #73293

    Sean
    Participant

    So many questions! Looks amazing! I will be back after work to ask some!

    #73297

    mulze32
    Participant

    That thing is awesome! Care to share the process? Are all the pieces cut from the MPCNC?

    #73298

    Steve
    Participant

    Here’s were I started Wasp Foam Helmet
    I bought his template and imported it into Inkscape tweaked the lines a little and generated the gcode with J Tech Laser Extension.
    Check the code in NCViewer and edited it in Notepad ++ if needed.

    The Laser did the cutting. I also added the the Hex pattern on the top of the helmet with the laser I think it looks good there. This is my first attempt with foam. I usually work work with paper then fiberglass it. The foam builds come along much faster.

    Foam
    More Foam and Glue

    1 user thanked author for this post.
    #73322

    Ryan
    Keymaster

    WOW!!!

    #73330

    Kevin
    Participant

    Incredible!  Looks really good.  What kind of laser are using; how powerful is it?  One pass or multiple?

    #73392

    Steve
    Participant

    The monstrosity you see in the background is a NUBM44-81 running at 7.5v ~6amps. Temperature controlled with a 15 amp Peltier cooler and CPU liquid heat sink that I had from another project. 10 amp PID LPLDD from Opt Lasers to control the Laser and cooler. I can run that thing all day and not overheat. I built that in one of my “I want to learn how everything works” phases. That being said I also built one to 2.8w lasers described on the site and that work just about as well. The focal point is much finer on the 2.8w lasers. Both lasers take more than one pass to cut 5mm and 6mm foam the feed rates will just be different.

    1 user thanked author for this post.
    #73401

    Aaron
    Participant

    Do you offset the cut by any amount? I know it tends to shrink a little bit after being exposed to heat/laser.

    #73409

    Steve
    Participant

    No, I don’t use any offset. There is some shrinkage but not enough to make a difference. I did find that air assist makes a big difference in how clean the cut is.

    #73728

    Steve
    Participant

    On to the armor….

    Attachments:
    3 users thanked author for this post.
    #73781

    Ryan
    Keymaster

    OMG, please tell me you do this for a living?!

    #73831

    Steve
    Participant

    OMG, please tell me you do this for a living?!

    Na, retired three weeks, keeps me from roaming the streets.

    I know it tends to shrink a little bit after being exposed to heat/laser.

    I found the sweet spot for etching a patterns on the foam. Power setting of 45 with a feed rate of 3000. Yup 3000, makes me smile every time I run something.

    #75002

    Steve
    Participant

    Attachments:
    2 users thanked author for this post.
    #75006

    Ryan
    Keymaster

    That is so insanely awesome.

     

    1 user thanked author for this post.
    #75009

    Aaryn
    Participant

    Wow!  That is amazing!

    #75013

    Dui, ni shuo de dui
    Participant

    The patterns look amazing

    Great work!

    #75014

    Barry
    Participant

    Well she won the costume contest!

    2 users thanked author for this post.
    #76541

    Neil
    Participant

    Unreal,  I would love to see some vids of that pattern being burnt into that foam that is awesome! Well done

    Neil

    1 user thanked author for this post.
    #76543

    Steve
    Participant

    I was thinking of making a video of the process. I’m sure there’s ways to improve it that I don’t know about. The shoulders actually required a masking with card stock because the patterns flowed over each other.

Viewing 19 posts - 1 through 19 (of 19 total)

You must be logged in to reply to this topic.