Going from printing to first milling operation.

New Home Forum Mostly Printed CNC – MPCNC Advice – MPCNC Going from printing to first milling operation.

This topic contains 4 replies, has 2 voices, and was last updated by  Levi Blaney 2 years, 7 months ago.

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    Levi Blaney

    Hey guys,

    I have moved and just got my MPCNC set back up. I havent printed yet just jogged the machine around some. Before I start printing though I would like to surface the spoilboard so it’s parallel to the print head. You can see my setup here https://goo.gl/photos/NoN3S24TkqsHsSki8 the pictures at the bottom are the most recent. After I surface it flat, I would then like to mill out at pocket to insert a mirror or piece of glass. I don’t have the dimensions yet but I’m going to head down to lowes in a bit to look for a 19×19 mirror or smaller. I have a 495mm by 495mm build volume. The idea is to set it up in a way that I can print multiple things on the mirror overnight and have less setup issues. Right now I got a little tiny glass square that I shim with business cards each time.

    My real question is should I make the pocket for the mirror with the surface bit? or should I use the flat bottom carbide bit? Or should I use something else? I have a feeling both will work but one it preferred over the other do to speed? Should I use the carbide and then clean up with the surface bit? I do realise I will have to do the corners with the carbide regardless.

    1/8 dual flute carbide

    Surface bit

    I also need to flash the rc8 firmware and read up on the fusion post processor again.

    Edit: Maybe not? Read on another post Vicious was having issues with it???




    Just my thoughts….If you creating a “pocket” for the glass/mirror to set into, you need to account for the diameter of the bit as the corners will either be a little rounded or a lot rounded depending on which bit you use. Either will work for your intended purpose, bit the surfacing bit will be faster. However the endmill will leave nicer corners.


    Levi Blaney

    I already knew I would need to use the endmill for the corners. That surfacing bit is 1in wide, so it wasn’t going to be even close. I think I’ll plane the spoil board flat. Then create the pocket with the surface bit and then do the corners last with the endmill. I just got back from lowes, bought a picture to steal the glass out of. Then got home realised it’s plexiglass and not real glass. Finding a square glass/mirror has been harder than I expected.

    Anyone got a recommendation on feeds and speeds? I have no idea where to start.

    Edit: Called a custom glass place, they want $47 for a 19×19 mirror…said I could have it in a few days
    Edit2: Second place wanted $15 and said I could pick it up after 2 hours. 19inch mirror is bought for.

    Now all I need is to plane the surface and make my pocket.




    Not sure where you are, but I buy glass for my printer at the hardware store and they cut it to size for $3. Granted, its 8×8, but id still check your local hardware store.


    Levi Blaney

    Yes I called around eventually found someone who would cut me 19×19 mirror for $15. I’m not going to mess with it tonight. I would really like a spare piece of MDF to make some test cuts but I don’t think I will get that luxury. I’m going to cut a small test square tomorrow at 15mm’s and then at 30mm’s and see how that goes.

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