K8200 3DRAG retrofit

Starting from the K8200 with a cnc mill, I added a loading system to accommodate boards of material to mill into and print on directly.

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This project was the subject of my master thesis at UGent and a collaboration with Velleman NV.

This is the second prototype of my retrofit. With a laser cutting plan to cut into 6mm thickness material (mdf works fine for me). All CAM g-code was generated using Fusion360 with post processing for the BOXZY.

Retrofit frame.pdf

The laser cut plan, red vectors -> cut into 6mm material, blue -> engrave

Adobe Portable Document Format - 1.05 MB - 06/15/2016 at 14:21


  • Engraving test

    samvl06/15/2016 at 17:31 0 comments

    Engraving in steel is possible but there seems to be a minute amount of slack. I just double-sided taped a metal spatula to a board for this.

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  • 1
    Step 1

    Lay out the laser-cut frame as in the picture.

    Align the pieces so that the scorched line is covered as in the picture.

    Assemble the other half. The assembly should look like this.

  • 2
    Step 2

    Use 8 M4x20 bolts and nuts with a locking washer to connect each side of the frame.

    For the motor mount make two assemblies as displayed, from two M5x40 bolts, three diameter 10mm M5 washers and 2 diameter 20mm washers and a 525 bearing.

    Then connect the stepper mount with these two as in the picture. Use an M4x15 nut and bolt for the central connection.

    The other side should look like this, notice that the scorched holes are on top.

  • 3
    Step 3

    Use two smaller M4 sized laser cut belt clamps and two M4x40 bolts and four nuts. Then connect this assembly to the X-carriage belt clamping both ends together. Tightening the X-belt is done in the same way as before (by lining up the idler bearing).

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