Quick bridging test: 10-80mm/s

3D printer bridging test I'm running before printing one of 3DPrintBuny's string designs.

#mihaidesigns #shorts

[raDius_McFly]

Didn’t knew they straighten up after the printer is done with a line. Everyday you learn something new, thanks mihai!

[VezD]

Speed will often give you better quality on a lot of things :)

[ge]

And that's why its important for cooling airflow to be in the same direction as the overhang. If you have a printer that blows in one direction and you print this at 90 degrees, youll get a lot of the strands being blpwn to the side...
Maybe another good test to try?

[sotErik]

In bridging tests you can get a very long distance to be extremely flat, however once you start adding more layers to the bridged segment it always sags.
Someone said that it's because it can't handle the added weight of the next layer but I'm not buying it.
I suspect that the heat from the subsequent layers causes the previous layers to soften and as they cool at different speeds because of the temperature gradient something is happening within the polymer chains.

[CharredChar]

From my experience this is kind of true but also not. What ends up happening is the bridge lines pull the two ends together and as you do more bridge lines it pulls more and more. This causes earlier lines to sage, you can even see it in the video as the first lines of the same section wobble and sage as a new line shrinks. Since you kept each section separate they shouldn't have affected one another but you'd need to run it in reverse to be sure.
The better bridging for faster lines can be account for by getting them all to cool closer in time together. This is why better part cooling helps too.
Good test though! I highly recommend others to do the same.

[wykonczeni]

Still w8ing for part 2 with results : )

[TimChambers-sy]

Now somebody needs to print a harp with all the strings perfectly tuned

[stephenteitgenengineering]

What's the cooling? Higher cooling make them contract wich I'd whay thay straightened

[Dater]

Wow! I didn’t expect that! I thought slower speeds would make for better bridges! I am also having some bridging difficulties and would like to try your file. Could you put it online somewhere? Also checked your homepage but couldnt find it. Thanks!

[sanelbilalic]

Hello,
how thick ist the line comming from the nozzle so i can Design something like this in Solidworks? If anyone can help me.
Thanks

[marcusd]

The next layers would be more interesting to see at different speeds, because those normally push down the layer(s) below

[misteri]

please share the stl for this for bridge testing :(

[TheAndyroo]

Is it possible to get them to overlap and not be strings at the end?

[olafmarzocchi]

It helps a lot to skip one line every two as you did so that there is a gap for better airflow and cooling. In PS it wouldn't be that nice

[thRaven]

Where can i find this neat test to print?

[exemch]

My printer lines just curl on the nozzle