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Eric Pavey
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Eric Pavey

Questions/Help  - 
 
Is there any sort of SD card size restriction running Marlin on a Rumba board?  I remember that before I upgraded my Rep1 to Sailfish the original Makerbot firmware only support cards up to 2 gigs.  I'm hoping that's not the case for Marlin... 2 gig cards are hard to find these days ;)
I have been searching online, but just can't seem to find anything on the subject...  
I just went to start a new print on my cbot, and realized that my one sd card is being used by my rep1... need to go pick up another one asap...
thanks!
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Justin Nesselrotte's profile photoEric Pavey's profile photoMichael Scholtz's profile photoChris Holland's profile photo
4 comments
 
I use a 32 gb. The main reason I use such a large card is because you can make folders. In the folders you can put all your prints. I do it by week. So all 52 weeks have a folder. 
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Eric Pavey

Questions/Help  - 
 
Marlin:  Is there any sort of official forum?  I've been searching all over, but can't find anything I'd consider "official-ish".  I think I know how to use Google... :S
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Gina Häußge's profile photoJeff DeMaagd's profile photoNathan Walkner's profile photoEric Pavey's profile photo
18 comments
 
Thanks +Nathan Walkner : I'd read that and installed the lib as well, but no dice at the time.  I'm just happy it's working at all right now :)
If my buddy hadn't provided me his cut I'm sure I would have been here saying "aaaahhh, what do I do?!?!?!" instead :P
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Eric Pavey

Questions/Help  - 
 
Filament cooling fans:  I have a pair of 12V, .1A 40mm x10mm fans cooling the extruded PLA from my Volcano head.  But I feel like it's not enough CFM:  Anyone have recommendations for something in the 40x10mm form factor that can push more air?  I've found plenty online, but am looking for a first hand recommendation...  The ones I bought didn't list their cfm, but I'm guessing I need something greater than .1A...
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DongWon Han (DWONH)'s profile photoJeff DeMaagd's profile photoEric Pavey's profile photo
10 comments
 
So while going over new fans to get, it dawned on me: "Of course I need more powerful fans" : On my rep1, .4mm nozzle, 200 micron @ 90mm\sec, that's extruding 7.2 mm3/sec of material at around 210 deg.

But with the Volcano, 1.0mm nozzle, 500 micron @ 45mm\sec, that extruding 22.5 mm3/sec of material at 250 deg  (If I print any cooler the layers don't like to stick well)  : Nearly 3x as much material coming out, and at a hotter temp.  

I'm not sure if this scales linearly, but I'd need at least 3-4x the airflow to keep the same cooling?  Makes sense in my head... ;)  
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Eric Pavey

Questions/Help  - 
 
Volcano users:  Any tips and tricks for successful prints?  I'm just starting with mine (1.75mm, PLA), and am looking for anything to get better results. Mainly I'm having issues with first layer adhesion, and delamination.  Overall successful, but could be better.  Thoughts?
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Eric Pavey's profile photoDaniel Jones's profile photoRyan Carlyle's profile photo
4 comments
 
When drastically changing nozzle size like this, it helps to think in terms of flow rates instead of linear speeds. Multiply your feedrate times layer height times extrusion width to get the nominal flow in mm^3/sec. What flow rate do you usually print a first layer with your other hot ends? Subsequent layers? The rule of thumb is that the Volcano can do 2-3 times the flow rate that a typical hot end with 0.4mm nozzle can do. So scale your normal print conditions appropriately.

For cooling and detail, it will help a lot to use shorter layer heights. That improves the surface area to volume ratio and make cooling much more effective. 
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Eric Pavey

Show-n-tell  - 
 
Build of my 'C-Bot' core-xy printer is nearly complete.  12" square by 24" high build volume. Currently running a 1mm Volcano nozzle. Been a great project.
http://www.akeric.com/blog/?p=3253
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Pierre Brown's profile photo
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Eric Pavey

Show-n-tell  - 
 
Designed an extruder cooler for my Replicator 1:  Something its been sorely missing.
http://www.akeric.com/blog/?p=2858
I purchased my Makerbot Replicator 1 nearly three years ago. I don't think at that point it was wide-spread knowledge that PLA likes to be cooled as it
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Eric Pavey

Show-n-tell  - 
 
Tried out Simplify3D's "vase mode" for the first time where it throws down one shell in a contiguous corkscrew pattern.  Turned out pretty well.  Just under 6" tall, 3 hours to print.
http://www.thingiverse.com/thing:621959
This vase was created entirely to test [Simplify3D](http://www.simplify3d.com/)'s "vase mode" feature: It prints the walls as one contiguous corkscrew spiral. Turned out great. Modeled in Maya.
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Elaine Gilbert's profile photoIvan Hoe's profile photoDavid Ricardo's profile photoYusuf Abukan's profile photo
 
I've used it before... It's weird seeing " printing layer 23414 of 123425"
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Eric Pavey

Show-n-tell  - 
 
First time posting here:  Wanted to share a new print of the SF Bay Area I'd completed.  Hope you enjoy ;)
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Eric Pavey's profile photoShirley Roy's profile photoMatt Davidson's profile photoWilliam Jackson's profile photo
4 comments
 
I think it is just wonderful!  I can hardly wait for my grandchildren to get into 3D printing - inspiring share! Thanks! (the snow falling effect was nice also)
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Eric Pavey

Show-n-tell  - 
 
First 'really big' print off my core-xy c-bot.  Vases are easy, and... look good ;)  20" tall, 11" diameter, just over 3 hours with the 1mm Volcano nozzle @ 500 micron.
Jump to C-Bot blog index to see all the posts. Emboldened by the success on my previous 'big print', I thought I'd go for a 'really big print':  Something that would really take up the whole build ...
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Eric Pavey's profile photoVaughan Lundin's profile photoDavid Keller's profile photoRayn Keiko's profile photo
4 comments
 
Wow that's amassing print. My luck , something will go wrong 10 minutes before the end. Well done
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Eric Pavey

Show-n-tell  - 
 
Happiness is: Two (or more) printers running at the same time...
Never had two before, but now that I do it's... pretty cool :)
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Vaughan Lundin's profile photoPierre Brown's profile photoPeter van der Walt's profile photoRayn Keiko's profile photo
15 comments
 
Looking good , I also want to have a second printer to save time.
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Eric Pavey

Show-n-tell  - 
 
First time ever printing with Ninjaflex:  Made this "test mesh" to see how it would work out:  Surprisingly well for my first shot.  Once thing I noticed is that it seems to behave a lot like nylon:  I'll need to add in more retraction for future prints to get rid of all the stringing.  Any other Ninjaflex tips?
http://www.thingiverse.com/thing:631247
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Jeff DeMaagd's profile photoTtron Kidman's profile photoSteve Simpson's profile photoMatt Perez's profile photo
3 comments
 
Extruder drives can do flex and retractions, but they need to be modified or built from the ground up with flex in mind. I see way too many designs that appear to have had no thought for flex. Really, just a liner that is cut to give no room for buckling and no gaps between the drive and the hot end.
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Eric Pavey

Show-n-tell  - 
 
New print of Oahu:
http://www.akeric.com/blog/?p=2783
enjoy
After making my SF Bay print, I thought I'd turn to the Hawaiian islands: I lived on Oahu for a time and have many fond memories. I was always shocked by its
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Eric Pavey's profile photo
 
I currently don't (although Kaua'i is an amazing place):  I suggest you make it :)  
Terrain2STL : http://jthatch.com/
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