Tag Archives: Bulbul Junior

Dimensional calibration in Deltabot 3D Printer

The formula for dimensional calibration is new_diagonal_rod = measured_length / target_length * current_diagonal_rod Current diagonal rod is 232.26 in Bulbul Junior. I printed a test model whose dimension is 40.00×28.00×18.00 (mm). Actual measurement of the printed model was 40.80×28.85×18.20 (mm). … Continue reading

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Strength of printed PLA parts?

The spring hook of a carriage broken apart in July 22 after 5 months operation. The force of spring was about 2 kg of weight.

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Printed Colemak keyboard

Now I have a real Colemak keyboard.  How many years it has taken? I used the key cap generator. Parametric Cherry MX/Alps Keycap for Mechanical Keyboards http://www.thingiverse.com/thing:468651 I created a short module that creates a key cap per letter. Filament: … Continue reading

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Bulbul Junior 3D Printer -new belt tensioner

Previous version It was akward, looked ugly. To adjust belt tension of one axis, it requires to loose the vertex frame then turn the belt adjuster bolt. The problem is when the vertex frame is moves up, it affects alignment … Continue reading

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Bulbul Junior 3D Printer – Adalinda: The Singing Serpent

http://www.thingiverse.com/thing:246198 Filament: eSun PLA 1.75 mm Layer height: 0.2 mm First layer temperature: 210C Temperature of other layers: 200C Marlin firmware setting echo: Last Updated: Mar 22 2016 03:35:52 | Author: (RichCattell v1.0, Bulbul Junior v0.99, No LCD) Compiled: Mar … Continue reading

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Bulbul Junior has flying extruder.

Two pullys support the 480 g of counter weight. The extruder weights 427.6 g.  Geared Nema 17 motor really heavy. The flying extruder in action. I’m impressed by the printing quality. Retraction problem, fine hairy strings were almost gone. Layer … Continue reading

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Spring loaded steel ball joint system

Fish line was too weak. So I tried a different string and it worked out for now. I reduced the build diameter from 150.00 mm to 70.00 mm at the moment due to design flaws of the carriage and shape … Continue reading

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Layer fan and a dummy object makes printing difficult models.

I opened an account on 3D Hubs as 3D Printing service provider. The first order I had to print the Marvin. It looked a simple model but I had to print over sixteen samples before I managed to print an … Continue reading

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Restart a print long after printing failure or stop.

https://groups.google.com/forum/#!searchin/deltabot/resume$20printing/deltabot/hHZ0AD5Ha1s/jTvc4-yH2T4J Yes, so the gcodes that got missing (you want to print again) will gave to be preceded with I.e. G28 ;home M106 ;fan on M109 S205 ;wait for temp 205 deg G92 Ewhatever ; set extrusion to last position … Continue reading

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Metric bolts and nuts

OpenSCAD ISO metric thread library / functions http://www.thingiverse.com/thing:311031 I printed M6x12, M10x16, M8x16 bolt and nuts. Three bolts needed to tap because of tiny blobs. I broke the M6 bolt while tapping it. Rough sketch of new belt tensioner The … Continue reading

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