Unresolved Failed Overhang

Try setting parameters to increase speed when printing overhangs, that can help stretch the filament tighter, also blipping the fans to 100% on overhangs can help too. In S3D fan speed for bridges is in the Cooling >> Fan Overrides >> Bridging fan speed override and speed is in Other >> Bridging >> Bridging speed multiplier.

 

Okay??? but that is the issue, you need to change some of these as I listed above. Obviously your fan can't go faster than 100% but your speed can increase.

 

Hey Spanky, I specified which ones to change. It will be a combination of stuff that will perfect bridging not one specific thing.

One more thing, if your extrusion width is too small it can also affect overhangs, try moving it from the automatic setting and try something like 120%-140% of the nozzle diameter.

 

you can always hit thingiverse for a bridge or overhang test print.

example of overhang test print :

http://www.thingiverse.com/thing:1564848

 

where is what made?

 

There are many, many (think I forgot to mention "many") inter-related settings in the slicers. This is why there is no one "recipe" for how to get good prints. It all hinges on the printer and the environment it is printing in too.

 

Nah. Wrong answer

You need to experiment to find what recipe works for you. There are a lot of things to try and tweak.

These visual guides are handy and since in your case overhangs are the big deal (I assume) then that is what you want to look into.

https://www.simplify3d.com/support/print-quality-troubleshooting/
http://reprap.org/wiki/Print_Troubleshooting_Pictorial_Guide
http://support.3dverkstan.se/article/23-a-visual-ultimaker-troubleshooting-guide


What can be even more of an annoyance is that in some cases the filament matters. The Robos are pretty fortunate in that regard since they seem to eat just about any filament. Sure, some really BAD filament performs worse, but not complete failure "worse" Other printers can be far more picky.

 

You may want to investigate a fan duct if you are not using one already since ducted fans direct the air more directly at the area you just printed. A better fan might also be an option since the ones the Robo uses are not terrific.

 

Hey Spanky maybe 3D printing isn't for you!

Very first screen in Profile has Extrusion width, It will be as plain as the nose on your face, unless of course you look like your LEGO avatar then there is no nose.

On first screen of Edit Process Settings are two radio buttons next to Extrusion Width, one is Automatic, the other is Manual with an edit box next to it. But if you are looking for a single slicer item that will fix your issue with overhangs please don't hold your breath. Maybe in a few years if you want to wait for slicer technology to be supplied by the likes of HP or Microsoft or someone with the development resources that are bigger than S3D.

 

spanky are you using one cooling fan or two? Pla? Two cooling fans makes a HUGE difference in PLA quality. and its a cheap and easy upgrade. I think the fan and jst connectors might cost around 12 bucks.

 

I'm personally not a fan of the 360 ducts, I prefer 2 good strong fans. Overhang issues can typically be addressed by tweaking speed, heat and cooling. Maybe a picture of your failed overhand ?

 

If you did not convert the fan from the stock you are not getting much cooling with a duct (even less with that style since the air has to "work" more). A simple directed duct is best for the (rather wimpy) stock fan. If you do replace it with one that moves more air then that alternative is fine. I think that duct may be part of your problem