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Re: Mike's ORDish Bot build

PostPosted: Fri Mar 16, 2012 10:52 pm
by mike
Test prints of two different objects: 20 mm cylinders with a 2 mm wall thickness, and 6 mm cylinders.
On closer inspection, the "threads" are the inside perimeter not sticking.

Any suggestions on the best approaches to debugging printing problems?

Re: Mike's ORDish Bot build

PostPosted: Fri Mar 16, 2012 11:46 pm
by JeremyBP
Would you upload your slic3r settings? I can have a look at those.
Then again, it may be a problem in the real world. Try printing one of these (http://www.thingiverse.com/thing:16799) and see how it works.

Re: Mike's ORDish Bot build

PostPosted: Sat Mar 17, 2012 2:29 am
by mike
The translucent blue filament is not camera friendly!

Issue that I can see: strings between the blocks, column deformation, & the bottom couple of layers are a bit wider.

Many thanks for taking a look!

Re: Mike's ORDish Bot build

PostPosted: Sat Mar 17, 2012 1:49 pm
by JeremyBP
Looking over your settings, I have a few suggestions.
Fill density: Slic3r take percents, unlike skeinforge, which takes decimals. i.e. 20 is 20% fill, 0.2 is 0.2% fill, etc.
Temperature: Extrude at the lowest temperature possible. For those speeds, you might be able to go as low as 165. If you're running marlin, you'll need to modify the minimum extrusion temperature. Experiment to find the lowest temperature you can reliably extrude at, and use that.

Your first layers stick out because you have the z-axis set too low. My guess is that you're doing this to make the first layer stick better. Wat you can do instead is change the first layer height ratio to 0.6, or something like that. Then set your zero to when the nozzle is just touching the platform.
Give it another shot. I'll be interested to see what that changes.

Re: Mike's ORDish Bot build

PostPosted: Fri Apr 20, 2012 3:03 pm
by mike
Haven't posted for a while, but just wanted pass on the info that I'll be taking my ORDish bot to the Bay Area Maker Faire next month :!: :!: :!:

Re: Mike's ORDish Bot build

PostPosted: Fri Apr 20, 2012 4:12 pm
by mxk
mike wrote:Haven't posted for a while, but just wanted pass on the info that I'll be taking my ORDish bot to the Bay Area Maker Faire next month :!: :!: :!:

Cool!! I'll be looking for you!

Re: Mike's ORDish Bot build

PostPosted: Sun Apr 29, 2012 3:08 am
by mike
Just upgraded the Z axis to ACME lead screws and added supports for the top of the rods.
Looks like precisiontechmachining does a lot of business on eBay selling ACME upgrades for 3D printers: http://www.ebay.com/itm/110854814830

Re: Mike's ORDish Bot build

PostPosted: Fri May 18, 2012 9:46 pm
by mike
Maker Faire 3D printer trading cards:
front_reduced.jpg
ORDish Bot trading card front
back_reduced.jpg
ORDish Bot trading card back

Cooling

PostPosted: Sat May 26, 2012 1:17 am
by mike
A couple of picture of my current cooling setup. I tried a duct that surrounded the extruder, but wasn't happy with the loss of visibility.
I ended up going with a Ducted cooling fan and adapter ring.
The duct is modified with an additional port for cooling the back of the extruder, and shields to direct the airflow downward.
IMG_2390.JPG
Cooling Duct, front

IMG_2391.JPG
Cooling Duct, Rear