3d Printers South Africa

howardb

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Sep 12, 2003
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It's one of the things I suspected, so cleaned and relubed it over the weekend.

Couldn't really tell if its the same place, but its within the first 30min each time, this is the model:

Also slow down the print speed, depending on the size of the model. Assume your printing vertical? Looks quite small and may have issues around some curves if printed fast.
 

xrapidx

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Feb 16, 2007
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Did you recalibrate the extruder e-steps after fitting? I had to when I changed mine... the setting was different to the stock extruder

Also slow down the print speed, depending on the size of the model. Assume your printing vertical? Looks quite small and may have issues around some curves if printed fast.
Yip - re-calibrated.... and printed slow..
 

howardb

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Anyway to gauge moisture levels in filament?
Mine cracks/shatters on the spool end as it uncurls, or you get crappy layer line adhesion when printing, similar to under-extrusion.

Also spits at hot end...
 

howardb

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Does it have a fan inside that's blowing warm air through? Currently using a food dehydrator, might need another one.
No fan, just enclosed. Stable heat from 35c to 50c. Have mine set to 35-40c for new spools whilst printing
 

BattleJ

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Jul 11, 2019
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Does it have a fan inside that's blowing warm air through? Currently using a food dehydrator, might need another one.
No but there is youtube video of someone adding a fan and moving the thermostat for more even drying. Got 4 of them so might sacrifice one to test.
 

saor

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Feb 3, 2012
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No fan, just enclosed. Stable heat from 35c to 50c. Have mine set to 35-40c for new spools whilst printing
Not sure how it's drying then if it's enclosed...the humidity isn't going anywhere?
 

xrapidx

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My normal lighting packed up... Spot the F14 mid flight :D
f62ee61d4fb6cdc83136c12378f7c885.jpg
 

B-1

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Apr 17, 2020
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If you guys want a cheap dryer the reptile heaters like this in a box work pretty good:


 

howardb

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Not sure how it's drying then if it's enclosed...the humidity isn't going anywhere?
Not sure, but it works well. There are 2x 4mm holes it the top and front-side of the cover, maybe the heat releases the moisture through them, really speculating though...
 

Werfetter

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Jan 29, 2010
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985
My metal extruder is installed and I will need to calibrate it now. I built my own dry box for filament which I print straight out of. Used a small blower fan to move the air over the silica packets to keep the air as dry as possible. Seems to work reasonably well. I used to get really bad cracking of the filament as it unspools and have not had it since I started using the dry box...
 

xrapidx

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Any tips on printing with PetG - about to kick off a benchy as my first print.
 

jd.vdm

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Aug 12, 2009
Messages
121
Any tips on printing with PetG - about to kick off a benchy as my first print.
Battled a lot with stringing. Dropping the temp does the trick for me. Start @ 250 and lower to 235 at layer 2 and then to 230 at layer 3.
Bed temp = 80
Glass bed with "Pritt"
Fan at 10% (Can't actually see a difference if at 10% or 100%)
First layer height 0.3 and rest 0.2 (or 0.1 for fine prints)
First layer slow ~ 8mm/s
Somehow also switching from Cura to Ideamaker helped. (Stringing, Blobs, Bed adhesion, etc...)
 

xrapidx

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So last night I preheated the printer, then got stuck with Cura crashing, and spending about 5min trying to get it back up and running - and the printer triggered a thermal runaway alarm... So - it got me thinking, I probably need to put something in place in case of a fire.

Has anyone bought, or used one of these?
 

howardb

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Sep 12, 2003
Messages
3,647
So last night I preheated the printer, then got stuck with Cura crashing, and spending about 5min trying to get it back up and running - and the printer triggered a thermal runaway alarm... So - it got me thinking, I probably need to put something in place in case of a fire.

Has anyone bought, or used one of these?
Haven't heard of these and they look quite powerful.
I have an extinguisher near the printer, as well as a fire blanket. Also have a smoke alarm directly above the printer on the ceiling.
 
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