Why do I need filament guide tube?

I was reading an article about z banding (I made another thread here about it) and came across another possible suspect. One I had never considered; pulling the filament from the spool could have enough friction to lift the extruder by tiny amounts causing the print to have occasional bands.It also suggests using a guide tube to fix that. But I don’t know how that helps, as it only adds more friction. Also, a lot of people/printer use these guide tubes. Why? Everyone seems to think they need one but I couldn’t find any explanation of why. http://ift.tt/22YiQXo

Ordered Monoprice Maker Select received V2.1?

I ordered the Maker Select on June 5th from Amazon received it last night. It has thumb screws and lock nuts on the build plate. Thumbwheel Also new bearing blocks that no longer rub on the belt. Bearing BlockI also printed my first benchy with it last night Benchy and while it needs some work (I think I was printing too hot) I was impressed at the quality considering I have done no dialing in or any modifications.My only complaint is I think the y-axis bearings are bad I hear a clunking/grinding noise when I move the bed and it is very jerky. So I am planning on ordering some new bearings and hopefully that will fix the problem. http://ift.tt/25OxeGW

OCTO Pi or ASTRO Print

I have used both, i am currently still using astro print. I would like to know which one the community is favoring and why.For my astro print is more streamline but loses some functionality. ( i hate i cant manually control the Fan) Octo Print IS great and i like the user interface but dammit i couldn’t get the dam web cam to work with it.)Any ways at least there are options out there. i highly recommend getting at least a pi 2. I cant go back to my pi 1 anymore. http://ift.tt/1Xd2j1Z

Looking to get add a new printer alongside my Rostock for faster 3mm printing.

I love my Rostock max V2 but I’d like to do a few more things that aren’t really its strong suit, mainly fast large prints using something like the Volcano hot end.I’ve spent enough time for a lifetime making this thing and calibrating it so I’d like something much easier without the delta style. Can anyone recommend something they really like?My budget is around 2k but I’d skip for something cheaper that was simple and had a large build volume. Also i’ll be printing mostly PLA but I would like a heated bed, even maybe as an add on further down the line. Any suggestions at all our welcome, I’ve already got a few I’m leaning towards but I’d like the communities input first, Thanks! http://ift.tt/1Yd0SzM