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mcgyvr

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Posts posted by mcgyvr

  1. Welcome to printing ABS..

    Many factors come into play even the design of whatever you are trying to print. ABS shrinks more than PLA (twice as much I thought) as it cools.

    I ALWAYS use the glue stick and the brim feature turned on (10-15 lines)

    I also have built an acrylic enclosure for the UM2 to attempt to keep the heat in/drafts out.

    I've also needed to add ribs/holes or other features to my models to avoid thin/thick areas. Same applies for injection molding.. Different wall thicknesses can warp/bow,etc... real plastic parts too

     

  2. I use the 3mm ABS from IC3D... Great stuff that feeds without problems.. and much cheaper than the stuff UM sells.

    As others have stated ABS can be difficult to get it to stick to the bed without warping during the print.

    I use the glue stick and the brim feature (10-15 lines) and can print 99% of the time without any problems.

    Worst part about the brim is you then need to trim it off which can leave some nicks/blemishes if you aren't really careful with the xacto knife.

    ABS is good for parts that need a bit more flex than PLA/higher heat resistance/won't dissolve with water/UV exposure.

    Other than that PLA is great.

     

  3. yes I do know that.. Just another step I have to remember to do..

    I guess I'd like to see things like layer height/shell thickness,etc.. machine specific stuff (nozzle size/can stay in metric though..

    No biggie.. mm dimensions don't just roll off my tongue as easily as others..

    Just seemed like something that would be simple to do and just be a "cool they are thinking about other customers that don't deal in metric"

    But having dealt with other "open source" hardware/software I do know its not as simple as I make it seem..

    I had nothing but problems trying to get TinyG to support Inches without bugs. Getting the Gcode to work with G20 vs G21 was quite a challenge for them for some reason.

     

  4. I still believe using a UM2 is a very expensive recipient for doing this type of thing... Good to know the process though

     

    yeah I could just use a hotplate but figured thats all the UM2 is down there anyways :)

    I get my UM2 tomorrow and if I do try it I'll obviously watch for any signs of damage if/when I do try it. And if something happens.. well then I'll just print a new part :)

    Just saw a few videos of people using their heated beds on other machines and just thought "oh thats perfect.. why not"

     

  5. Just looking for recommendations on a good source (in the US) for quality ABS filament for the Ultimaker2 I just bought 10 minutes ago.

    Bought the printer from 3duniverse but they don't have ABS in 2.85mm (or 3mm) just PLA/Bridge Nylon

     

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