old-fashioned rafts ?

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dansker
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old-fashioned rafts ?

Post by dansker » Wed Sep 17, 2014 11:44 pm

Just moved from a old dead PC to my MacBook Pro... installed the software and got used to clicking "new filament" every time I start it.. but... the new thin raft peel straight off on my original UP! printer.

Anyway of getting the good old-fashioned wasteful mushed down rafts back in the new software.? right now all my prints fail about 4-5mm into the print because the nozzle knocks the print off the platform. sigh.

guess the alternative is getting a old crapper from ebay and stick the old V1 software on there.. but that seems backwards. :mrgreen:

help please.

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KCSteve
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Re: old-fashioned rafts ?

Post by KCSteve » Thu Sep 18, 2014 4:36 pm

Did you set your nozzle height? If you're a tad high then the raft won't be mushed into the perf board.

Or it's a Mac thing - can't say since I don't have a Mac.
Enjoy!

KCSteve :->

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DrewPetitclerc
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Re: old-fashioned rafts ?

Post by DrewPetitclerc » Thu Sep 18, 2014 5:41 pm

If you really must waste plastic on raft, try moving your model in the software a few mm in the "Z" direction before printing, that used to work.
But KCSteve is probably right you will still have lift if your build plate is not well trammed to the nozzle.

Regards
Drew
Drew Petitclerc
Petitclerc Designs
Owner/Senior Principal Designer, prototype, tooling and test equipment design and 3D printing
http://flash-graphics.deviantart.com/
http://www.thingiverse.com/DrewPetitclerc

dansker
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Re: old-fashioned rafts ?

Post by dansker » Fri Sep 19, 2014 5:59 pm

KCSteve wrote:Did you set your nozzle height? If you're a tad high then the raft won't be mushed into the perf board.

Or it's a Mac thing - can't say since I don't have a Mac.
Thank you KCSteve, I think I need to revisit the height, my printer is one of the very first ones and the nozzle height is at the end of the range. I will put some washers under the table and get it a little closer to the nozzle. it worked OK with the old print app, but seems to be borderline with the mac version (probably with any newer version really)


Drew, that is a great idea, Im with you and hate to waste plastic, but printing some tall parts and need to avoid them being knocked off the platform, a couple of mm of "support" will putt less lift stress on the attached part to the platform.

Thank you guys. Im off to try again. :D

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DrewPetitclerc
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Re: old-fashioned rafts ?

Post by DrewPetitclerc » Sun Sep 21, 2014 3:23 am

dansker wrote:printing some tall parts and need to avoid them being knocked off the platform, a couple of mm of "support" will putt less lift stress on the attached part to the platform.
With tall or small diameter tall posts it is best if you print multiple parts at one time, this allows a "tower" to cool while others are being printed.

Regards
Drew
Drew Petitclerc
Petitclerc Designs
Owner/Senior Principal Designer, prototype, tooling and test equipment design and 3D printing
http://flash-graphics.deviantart.com/
http://www.thingiverse.com/DrewPetitclerc

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