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3D Printing

12 Posts authored by: DAB Top Member
While I was waiting for a migraine to dissipate I got an idea about how to fix some of my early prints where the layers threaded instead of melting together.   So after my head cleared, I took one of my early prints and put it into the microwave on a glass plate. I started slowing heating the print a few minutes at a time. After about ten minutes, the printed part became pliable. A few more minutes I took the part out and let it cool. To my delight, the threaded layers actually melted ...
DAB

DAB PrintBot Jr. Update.

Posted by DAB Top Member Dec 29, 2014
Hi All,   I finally got a good print yesterday. It turns out that Slicer will over ride you printer settings unless you explicitly tell it not to. I also reduced the verticle slice size and increased the extruder temperature.   I also set up the printer for 80% fill for the open areas and this gave the final print the solidity I was looking for.   Now I can start the process of looking at designs to try for the neck brace.   More later.   DAB ...
DAB

DAB Printerbot Jr. Update

Posted by DAB Top Member Dec 19, 2014
I took this picture to show everyone what I mean when I talk about threading.   The black object came with the printer to show what the printer made before it was shipped. The white object is my test print.  While they look similar,  I can separate the layers with my thumb nail, so they are not solidly fused as they are with the black print.   So my next print I will adjust the vertical print size so that the layers are more compressed.  From the picture, you can se ...
DAB

DAB 3D Printer update.

Posted by DAB Top Member Dec 16, 2014
Hi All,   I managed to make some time to rerun the 3D printed object with the higher temperature and the default feed rate.   The final print still had a threading texture, but when I looked closely, I could see the separation between each layer.   So at this point, I need to go back and look at the settings for each layer.  Clearly the steps are larger than they should be.   I will post another update after I have some time to look over the settings and double check ...
DAB

Another DAB 3D Printer Update

Posted by DAB Top Member Dec 12, 2014
Hi All,   I finally had some time to make some adjustments to the Printerbot Jr. Unfortunately I changed two things at once, so I will need to run another test.   To recap, the last part print test I ran resulted in a product where the bottom layers did not fuse together, causing the layers to separate. Following the suggestions from some of the members, I adjusted the injector temperature to 206 degrees. That change will keep the filament at a higher temperature as it flows out o ...
DAB

Another DAB update.

Posted by DAB Top Member Nov 11, 2014
I finally leveled my printer bed and verified that my tape covering had the proper clearance.   So I made a test print of a 3D mars map.  At this scale, it was less than impressive, but I wanted to see how well it could be printed.   Now I noticed that the layers did not melt together.  Does anyone have an idea as to why?  I am using PLA that came with the printer, so I wonder if it is just too old or possibly absorbed too much moisture.   So now I can move on ...
DAB

Quick Update.

Posted by DAB Top Member Nov 5, 2014
Hi all,   I adjusted the bottom stop and things looked good, but then I found that the bed was not level.   I did try the plastic postal tape and it worked ok, but the ejector caught on it and ripped it up.  That problem should go away. I also noticed that the heated bed started making bubbles under the plastic tape.  I am not sure if it was due to the heat interacting with the glue, residual moisture, or just the tape itself.   I will retry the plastic tape after ge ...
DAB

DAB Printbot Update

Posted by DAB Top Member Oct 28, 2014
Hi all,   I have assessing the current neck brace I use and taking measurements on my neck.   I am considering doing a full 3D model of my neck so that I can play around with different designs.   The key issues I need to address are keeping the head in place during fast movement events like whiplash.   So I need to look at the rotation points of the brace and assess the force distribution through the different parts.     On a side, note, I noticed that the prin ...
DAB

It's A L I V E!!!

Posted by DAB Top Member Oct 15, 2014
Great progress yesterday.   I sat down with the printer an looked over the nozzle area and I found the part I was looking for.   There is a bearing wheel that puts tension on the filament against the drive wheel. This detail was NOT included in the directions.  Luckily I was able to see how it should go together and adjusted the mechanism and viola, it printed just fine.   Sorry for the fuzzy image, but I was hand holding the camera while the printer was moving.   ...
DAB

The 3D printer doesn't print!

Posted by DAB Top Member Oct 14, 2014
I have begun to dig into the problem after the first print failed.   It appears that the factory did not clear the nozzle after they did the test print.  I also had problems pushing the new filament down into the nozzle. When I tried to feed the ejector, the drive wheel turned, but did not appear to be pushing filament like it should.   Plan for today is to clean the nozzle and see if I can get the drive wheel to push the filament so that it can print.   From what I have ...
After opening the box, I went to the website to get the unboxing instructions.   When I got to the directions, I quickly found that they were not for the printer I received. I spent a lot of  time searching the site until I found the right instructions for my printer, so I give the Website a C-, difficult to use.   Trying to follow the instructions, I had a bit of difficulty.  As some of you know, I am currently suffering from a medication issue and even though I have a Ma ...
DAB

My PrintBot Arrived.

Posted by DAB Top Member Oct 9, 2014
On a dark raining and glooming day, my world became much brighter when the UPS truck pulled up in front of the house. What could it be, I said to myself.  Then I saw the driver run up the driveway and place this big box on my doorstep.   Sure enough, it was from Element 14, my new PrintBot 2.0.  Again, I want to thank Element 14 and the makers of PrintBot for this wonderful gift.   I will link in pictures later, but first I had to open the box and behold my new tool. One ...

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