My "BAP"

[teoman]

Make sure those wires sticking out do not have any metal exposed. Getting a sort there is a good way to go on a fuse hunt. ( contact with the hotend resistor wires are also a good location to get a short)

[3D-Print]

Printing the Eiffel Tower (thingiverse.com/thing:22051). This has a very small footprint on the deck. Had a bit of trouble getting the ABS to stick. After 3 tries, I increased the deck temp to 100 degrees and so far working well.

Not sure why I agreeded to such a complicated print, but my kids convinced me. In the end is cool.

Dan
...................

[3D-Print]

Here it is!!!

[3D-Print]

Make sure those wires sticking out do not have any metal exposed. Getting a sort there is a good way to go on a fuse hunt. ( contact with the hotend resistor wires are also a good location to get a short)

Thank you!

I did wrap with Kapton tape twice. I have been watching it closely. Not impinging. But maybe should have cut them shorter. I may put a loop in them to keep them out of the way.

This totally rocks. My teenagers and I have been sitting here watching it print for 3 hours.

[3D-Print]

I realize the print is only as good as the print design and programming. The Eiffel Towere is totally cool but has many imperfections. Is there a grading system for the quality of a .STL file?

An iPhone 5S case is next.

[3D-Print]

Overall interesting. Some parts of the print collapsed. Is this programming? Speed?

Still was fun.

[3D-Print]

At 100 degrees it stuck and was nicely adherent. Was able to "pop off" each "leg" of the Effile Tower at about 70 degrees very easily. Much better than not sticking at all at 80 degrees!!!

Wiped off the print surface with isopropyl and now loading up an iPhone case.

[teoman]

You have to tune your settings a bit.

Try dropping your temp a bit.

[3D-Print]

So Surprising the Eiffel tower looked OK, however as detailed (http://forum.seemecnc.com/viewtopic.php?f=36&t=7361" onclick="window.open(this.href);return false;), the basics. Printed the calibration cube and although was happy overall, the first layer did not set well. Was adherent well, but one corner is curl up.

Thus, changed the first layer thickness and dropped back my HotEnd temp to 220 and bed to 90.

Running it again.

[3D-Print]

I slowed down the print which helped to see what was happening.

I changed the first layer height to 0.2 mm. With this a nice layer, however, there was some dragging of ABS by the tip which created a mess. I think, I will change this to 0.23 mm next time. Trial and error........ but learning!!!

What is the best way to clean the HotEnd

Dan

[barry99705]

I slowed down the print which helped to see what was happening.

I changed the first layer height to 0.2 mm. With this a nice layer, however, there was some dragging of ABS by the tip which created a mess. I think, I will change this to 0.23 mm next time. Trial and error........ but learning!!!

What is the best way to clean the HotEnd

Dan

Heat it up and wipe off with a paper towel should work. Another option would be leave it off and lower just the tip in a small amount of acetone to soften up the plastic. Then wipe off with a paper towel.

[3D-Print]

Awesome. Will do after my current print!! Thanks!

[3D-Print]

Ran the calibration Box. Only a few layers which were disrupted.

[3D-Print]

I can see the difference when I set the first layer of ABS to 0.2mm vs 0.25. The 0.2mm sticks quite nice with a bed at 95 degrees. HotEnd was 220 degrees.

Is a bed at 95 degrees to hot with my PEI? Pieces come off ok and a couple popped of at 90 degrees.

[3D-Print]

Trying to figure out why we get a bleb once in a while. I watched the HotEnd and when it is laying down at the edge, it would pause for a bit and that is when a bleb or bulge would form. Is there a programming feature to avoiding these blebs? More to learn!!!

Again, thanks to everyone for their amaizing insight and help!! :')

Dan

[3D-Print]

Ok. So in reading and watching the printer I think these blebs occur at retraction points when to much filament is extruded. Thus, I set the extrusion multiplier to 0.9. Thought about increasing the mm retracted but it also seemed reasonable that adjusting the overall rate would achieve the same thing since it appears there is general amount of excess. Then I sat and watched printing and backed off a bit more during printing with the tuning adjustment in MatterControl. We will see!

Prints are still sticking well with a bed at 90 degrees. Items come off easily as the temp drops.

[3D-Print]

Here are some of those "blebs!" Or what ever you want to call them.

Am I thinking about these little devils correctly?

[3D-Print]

The surface is not very smooth. Need to work in that!

[3D-Print]

Getting better!

It seems like it was to fast and to hot when building the top. The whole thing was flexing with laying down the new layers. I also suspect this is why the precision of the "beams" decreased at the top.

Dan

[3D-Print]

Much better results with round #2 (left side) as compared to my first print (right side). Step wise problem solving:

1) Changed the HotEnd to 225 degrees and the bed to 90 degrees.
2) Set the extrusion ratio to .89. With this iPhone case print, it resolved the blebs. I'm now reprinting the Huskers. Will see if there are less blebs on that reprint.
3) Also increased the number of final layers to 4 to see if it smooths out the final surface.

[3D-Print]

Again, thanks to mhackney for all his great tips (http://forum.seemecnc.com/viewtopic.php?f=36&t=7361" onclick="window.open(this.href);return false;). It really helped me get thing a bit tighter with my prints.

Awesome stuff!!!

Dan

[3D-Print]

A reprint of the "Husker" Logo was successful with only two blebs (at the bottom of the "H") and none after I turned down the extrusion ratio to 0.86. The finished surface has a bit to be desired and increasing the number of layers to 4 helped.

More for later but I think I need for "filament flow" for the last layer to ensure I fill the gaps between each course.



Dan

[3D-Print]

I think I just found it. I need to modify my top fill extrusion width! Another trial of this tonight!!!

Dang this is addictive!! LOVE it all!!

[3D-Print]

56 hours of printing. Awesome stuff. Learning a ton about how to do it right.

Replaced power unit has been without Problems.

The PEI print surface rocks. 90 degrees is a killer. The only time something doesn't stick is when my first layer is off and not 0.2 mm. When I get 0.2 and 90 I have had no curling and everything comes off easily at 40-45 degrees.

Next: build an enclosure. Layer separation has been a problem when I print larger objects.

Again thanks to everyone who has made this awesome. I need more filament!!!

[3D-Print]

I just started to print the supports for my enclosure as detailed (viewtopic.php?f=42&t=7149) since I continue to have some separation of my layers. I am also planning to run a small conduit along the wall of the enclosure for extra wires to run my future second Hot End.

We have had a great time printing and my girls are starting to print on their own as well. If it keeps going I'm going to need to set up a schedule so I can get on the printer.....