Week 5 Angel, Elle, Zaina¶
Overview¶
| Name | Assignment |
|---|---|
| Angel | FormLabs, Definitions for 3D Printing |
| Zaina | Definitions for 3D Printing, Infill Test |
| Elle | All-in-one Torture Test |
Definitions for 3D Printing – Angel, Zaina¶
I looked over the Angelina’s documentation and found the group website of this week. I copied all the terms from that group wesite.
| Term | Meaning | Source |
|---|---|---|
| Overhang | sections of a three-dimensional model that extend outward at an angle from the vertical axis of the object being printed | Anker Make |
| Bridges | segments where the extruder releases filament over the air between two supported positions in the same layer as the bridge | All3DP |
| Clearance | the presence of a gap between parts, allowing them to move relatively freely | JLC3DP |
| Infill | the structure of the material inside a 3D printed part | Additive-X |
| Dimensions | the number of coordinates required to specify a point on the object (x, y, and z axes) | vedantu |
| Wall thickness | the distance between one surface of your part and its opposite sheer surface | helpjuice |
| Anisotropy | the property of being directionally dependent | ScienceDirect |
| Surface finish | the texture of a surface and is determined by the three characteristics of lay, surface roughness, and waviness | GD&T basics |
Formlab - Angel Fang¶
Overview¶
In this week group assignment, I did the exploaration of Formlab, a SLA printer which prnt using resin. It took so long to print a thing the size of a nail. The estimated time is 1 hour 30 mins, and it ended up taking 4 hours to print because the estimated time did not include the 2 hour pre-heating. I printed on Friday when Fab lab was closed early. So I had to leave my print in the printer for 2 days and wash and cure it on Monday. I was really worried about my little stool print but it turned out really good. The Formlab printer should be used for mass production because it won’t increase the printing time when printing multiple copies.
Workflow for Formlab¶
Setting Up Job in Resin Printer :
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Go to printer and clean build plate then lock it in
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Then hit “Prime”
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Follow the steps provided ie, locking build plate and opening vent
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Open FormLabs PreForm 3.28.1 on a computer in Charlotte Latin School Fab Lab.
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Under “Job Setup” select “LearnedFish” Printer preset
- Settings are Form 3B, Durable V2, and layer thickness of 0.100 mm or 0.050 mm
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Open model file (either .STL or .OBJ).
- Go to File–> Open. Bring a file in. It will place the file in the virtual workplane.
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Orient the model for the best printability
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On the right side of the screen, verify “Printability”. This should be green in color.
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On the left side of the screen, click on the orange “Start A Print” button.
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Select a printer; this should say “LearnedFish” since it’s already been configured
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Then “Upload Job”.
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Go to printer to confirm that the print is running
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Wait until step 5 of the checking process
After Job Is Complete :
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Pull the entire build plate out
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Press “Open” for the washer and slide the entire build plate on the ledge
- If not using the basket, please remove basket and place it on some paper towels
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Start washer for twenty-minute cycle
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Once wash cycle is finished, put on disposable gloves
- If the build plate is still sticky, the wash didn’t cover the entire print. Fill more alcohol into the wash and re-wash the print
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Carefully pry the print job from the build
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Place print job (alone) in curing machine for sixty minutes
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Wash the build plate with alcohol and put it back into printer
Process of using Form 3B¶
I first spen a few minutes findig a simple 3D model on Pritnables.
AFter I found the model, I imported the .stl file into the PreForm app to set up. I first scale the stool model down to 0.1 because it took SO LONG to print just a teeny tiny stool.
Then, I clicked “One CLick Setup” feature to set up everything I need, including adding support and fixing cup problems.
The final design looked like this.
Next, I selected the right printer which is Form 3B for our lab. For the layer thickness, I did 0.050 mm. Later, Mr.Budzichowski told me to choose Adaptive for layer thickness. Then I sent the design to print.
Its estimated time was 1.5 hours. However, the pre-heat time for the printer was not included in it. It eneded up took whole 4 hours to print it. It was on Friday when I printed it. The lab was closed early. So I had to leave my print in the printer for two day.
On Moday, I started the wash process. I took out the whole platform and put the platform into the washing machine with a whole bucket of alcohol.
Notes: Rememeber to wear gloves for the washing and curing process!
After washing the print for 20 mins, I took it out anduse a scaper to take my stool model off fromt the platform. Next, I put it into the cure machine for 60 degrees celsius for 60 mins.
After that, I took off all the support using a clamp. Finally, my little stool model was completed!
Overhang Test for Form 3B¶
Since our resin printer had not been used for a while, Mr.Budzichowski tested the printer and printed the overhang test.
Infill Test - Zaina G.¶
For our infill test, we first started by creating three 1x1x1 inch cubes. We ran the print 3 times and stopped each print at 25%. On the first one we used a 15% infill, on the second we used a 30% infill, and then on the third we used a 60 percent infill.
15%¶
30%¶
60%¶
Conclusion: Overall, we observed that higher infill percentages resulted in longer print times but also increased strength. While 15% infill was the fastest to print, it was much weaker than the others. On the other hand, 60% infill provided the greatest strength but required much more time. Based on our results, the optimal balance between print time and strength appeared to be in the 15%-30% range.
All-in-One Torture Test - Elle Hahn¶
The all-in-one torture test is a test for 3D-printers for you to see what you printer can do on standard settings. It’s designed to specifically test certain abilities of the 3D printer. The file for this test is already created in Thingiverse.
Once I dowloaded it from there, I put it in the Bambu labs. This is the software used for our Bambu printers. I decided to test the A1-mini. For the settings I didn’t change anything because it’s important to test the printer at the default settings for this test.
After that I printed in and it came out like this. As you can see in the photos, the A1-mini didn’t do a good job at the words. The words to lable the tests where not printed at all. Also as it got closer towards the 80 degrees it begins to get messing. It was good all the way til the switch from 60 to 70 degrees. everything other than those two things passed and did well.
