SoliForum - 3D Printing Community — Supports stringing off model

Re: Supports stringing off model

2016-08-29T23:15:59Z

Looks like support distance can only be set to 0 or 2 in Slic3r

I did a test print of 4 cylinders

20mm 15mm 10mm and 5mm

all 30mm height and came out perfect,

I then tried 5, 4, 3 and 2 which all failed / were jaggy.

This does appear to point to the speed being the issue as 5 worked when paired with 20,15 and 10.

I might try print a bunch of 3 and 2's and see what happens.

Worked without issue, looks like I finally have my settings. (touch wood)

Re: Supports stringing off model

2016-08-26T22:20:18Z

Thank you

Additionally I had someone else reply to suggest setting the support distance from default 2.15 to 2 or even 1.5

Now I know re smaller parts too so I have a few ballpark settings saved now.

fingers crossed.

Re: Supports stringing off model

2016-08-26T13:09:58Z

The issue with 3d printing on a whole it that every part, and every spool of filament requires different settings. Yes you can get a ballpark setting but it will still need to be tweaked for every part. It all depends on geometry. Larger parts can be printed faster but small parts need to be printed slower and often times requires them to be printed in multiples or print something else on the bed at the same times. The trick is to allow time for each layer to cool before the next so that sometimes requires something else to be printed so the hotend moves away from the smaller part for a while. Getting the settings right for each print is the hardest and most troublesome part of this hobby.

Re: Supports stringing off model

2016-08-26T11:07:52Z

So 10 worked ( still not 100% but best so far) but was so painfully slow.

Apart from the support issues of late I was previously able to print without issues at a decent speed.

Hrmm I'm so lost

Re: Supports stringing off model

2016-08-26T05:38:55Z

Same deal and twice the wait

http://imgur.com/a/IpXtP

Cooling set to Auto and minimum layer time 30 seconds

EDIT

I didn't read the settings correctly, Setting the speed required all other settings to be 0 (Which I didn't do the first time)

Trying again @ 30 mm/s now with 100% cooling (except first 5 layers)

If that fails ill try 10mm/s

EDIT EDIT

So, 30 mm/s failed (but probably best print so far)

trying 10 now (2 1/2 hour print for a 5 cm tooth...) If that still fails I can focus my attention elsewhere..

Re: Supports stringing off model

2016-08-26T00:48:55Z

Thank you. I'll change to 30ms and test

Update:

http://imgur.com/a/WtZLl

All settings at 30 mm/s still occurring
Cooling @ 100%

Foudn the setting in cooling to set layer time minimum from 5 - 30.

Print time now gone from 45 mins to 1:45..... fingers crossed.

Re: Supports stringing off model

2016-08-25T16:58:34Z

50mm per second is too fast for a Da Vinci. Their default for fast printing is 40mm per second. Medium and fine are even slower. The Da Vinci is not a fast machine and should not be run over 40mm per second without a different hot end design.

Re: Supports stringing off model

2016-08-25T14:55:35Z

Print a tall skirt along with it.

Re: Supports stringing off model

2016-08-25T14:16:51Z

Roger that, I was trying to find the specific setting in slic3r and went from 80mm/s to 50 mm/s and still same issue

The only other thing I can think of is maybe the infill is too low (5%) ill try a 100% on it to see if i get same results then work backwards.

Re: Supports stringing off model

2016-08-25T13:28:16Z

Slow the feed rate down. The layers don't have enough time to cool before it starts laying down the next one

Re: Supports stringing off model

2016-08-25T13:25:43Z

Turned cooling to full, took heat down to 210 still doing it

Re: Supports stringing off model

2016-08-25T10:31:02Z

Those teeth defenitly need better cooling

Re: Supports stringing off model

2016-08-25T03:50:59Z

Update. Figure if I sort this out it will be the solution with the supports too

http://imgur.com/pGOtXDf

These are supposed to be smooth sabre tooth tiger teeth.

From left to right the only changes have been cooling

100%. I've always on Automatic Off

Slic3r .32 layer heights
Abs
Da Vinci 1.0a firmware flashed with repetitive
Extruder 230
Bed 100
3 top and bottom layers

Re: Supports stringing off model

2016-08-24T14:26:54Z

And i don't know davincis bit 250 seems kinda hot for abs

Re: Supports stringing off model

2016-08-24T14:19:24Z

I'm not sure. I only have an sd4. Only print abs. I have a blower fan running full all the time pointed at the print