Hi Sander,
yes, certainly I will start with 2,85mm.
Only if it would be something easy (and cheap) to do I would consider using a 1,75mm conversion -
just to get rid of all that filament I still have around here;-)
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SandervG 1,521
There are more things to take into account. In the '2.85' bowden tube (the inner diameter is actually 3.16mm) you almost completely undermine your retraction settings if you feed 1.75mm through it and lose almost all control over your filament. The feeder also is dialed in for 2.85mm filament, not sure how it would respond to 1.75mm filament. Then, at the end of the line, there is also the print core.
Anyway, I would definitely stress to start off with regular 2.85mm filament, how it is intended to be used. After a while, when you are familiar with the Ultimaker 3Extended, ask yourself if you got used to 2.85mm filament and just continue to use it or that you still want to convert. Perhaps the need will be gone then and you'll use it as intended. If not, there is a lot of help here to help you out![:) :)](//content.invisioncic.com/ultimake/emoticons/5a33abdf6d109_1f60acopy.png)
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