Raft advice

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vmstech
Posts: 49
Joined: Mon Jun 27, 2016 11:23 am
Location: Bucks, United Kingdom

Raft advice

Post by vmstech » Fri Jul 29, 2016 12:24 pm

Hi all! :D

I have never really got on well with rafts, on my old 3D printer they would always get stuck to the part and end up creating a nasty mess on the bottom.

Has anyone got any tips or advice on how to print with rafts using the UP box?
What are the pros of using a raft compared to going without?

Any feedback would be appreciated!

Cheers,
Heather

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Tiertime-Jason
Posts: 286
Joined: Mon May 05, 2014 4:31 am

Re: Raft advice

Post by Tiertime-Jason » Sat Aug 06, 2016 7:40 am

Raft is always recommend when using UP printers.
The platform leveling is compensated by raft. The raft also help adhesion.
When switching from raftless to raft, you need to adjust the nozzle height.

vmstech
Posts: 49
Joined: Mon Jun 27, 2016 11:23 am
Location: Bucks, United Kingdom

Re: Raft advice

Post by vmstech » Mon Aug 08, 2016 9:34 am

How can I stop the raft getting stuck to my part though? Is there any settings that can be changed to help aid easier removal?

So far I've had such good prints without a raft that I just haven't seen the need for it to be honest! Is there a certain material that rafts work better with? On the UP box I've only tried it with PLA rather than ABS.

How much do I need to adjust the nozzle height by to account for the raft? Is this not done by the software?

Cheers,
Heather

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Tiertime-Jason
Posts: 286
Joined: Mon May 05, 2014 4:31 am

Re: Raft advice

Post by Tiertime-Jason » Mon Aug 08, 2016 9:41 am

You need to have a gap about 0.2-0.4mm between nozzle and platform surface.
When print raftless, you probably leave the gap =or< than 0.2mm to get good adhesion, so when switch to using raft, you may reduce nozzle height value for 0.2mm.

optimal nozzle height and plenty of cooling will make your raft separation easier.
If your are printing ABS, the raft is generally easier to remove than PLA. ABS+ is about the same as PLA.

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