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Ultimaker 1 and 1.75 filament


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Posted · Ultimaker 1 and 1.75 filament

Hello experts.

Anyone of you tried to convert the Ultimaker 1 to use 1.75 filament?

I found this procedure:

http://cargocollective.com/scottmayson/Ultimaker-1-75mm-Filament-Conversion

It looks quite straightforward, but I'd like to ask your exeperience if someone tried to do it and if there is something specific to know.

Thanks for your help.

cips

 

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    • 2 weeks later...
    Posted · Ultimaker 1 and 1.75 filament

    Imho there is a simple case that favors 3mm filament over 1.75mm:

    Assumption:

    Both 3mm (which is actually 2.85mm) and 1.75mm filaments are manufactured with +-0.05mm diameter tolerance. 1.75mm doesn't go lower than 0.05mm (I believe that is pretty much impossible anyways).

    Conclusion:

    2.85mm +-0.05mm = 1.8% diameter error tolerance

    1.75mm +-0.05mm = 2.9% diameter error tolerance

    Note that there is also +-0.1mm tolerance filament. This would make things even worse for 1.75mm filament (5.7% diameter error tolerance vs 3.5% for 3mm).

    So to me it's clear that 3mm filament should be favored over 1.75mm, because variations in filament diameter result in uneven extrusion which gets you bad prints.

     

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    Posted · Ultimaker 1 and 1.75 filament

    On the other hand, with 1.75mm you have less volume in the melting chamber, which results in better retractions. And you need a weaker feeder for 1.75.

     

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    Posted · Ultimaker 1 and 1.75 filament

    Agreed. However, for UM purposes, 3mm is far superior.

     

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