Links Into Hangprinter v3 Build Video

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On Dec 13-15, 2017, tobben and Tom made a live stream in 4 parts on Youtube, where they built and debugged a Hangprinter v3. The videos are very long, so this wiki page is created as a "table of contents". Help out and fill in if you watch the videos: Part 1, Part 2, Part 3, Part 4.


Part 1

1m38s: Start

2m52s: Start of mover build

5m24s: Snap mover into place

14m22s: Cracking sounds in printed mover parts. New versions of those parts do not rely on flex anymore.

17m18s: Orientation of extruder motor.

19m10s: "I want to use a naked mover to make markings on the ceiling plate."

24m44s: D-linerollers use bowden tube"

25m42s: The designer who drew D-linerollers made them too narrow. Called him. Now fixed.

48m30s: Don't trust spools to be 5 cm radius. Measure them and input into firmware the real radius.

51m5s: Noted down radius onto spool.

51m50s: Pro tip about spool/gear mounting.

54m35s: Starting to place out spools.

57m10s: Important note regarding D-lineroller placement. Rotate them appropriately.

58m50s: Close-up of wood screw.

1h23s: Pro tip: Furniture pods on back of ceiling plate.

1h9m45s: Close-up of mounted D-lineroller.

1h17m1s: You can tie lines from heat break to corner clamps to support/stiffen up hot end.

1h18m1s: Pushing 608 bearings into place.

1h18m42s: Pro tip: route thermistor wire inside heat cartridge wire's heat resistant sleeve.

1h19m50s: Let's attach some line. 3x5 m on the D-spool.

1h25m22s: Using one D-line as a reference for the others.

1h26m20s: The Hangprinter Hitch.

1h33m55s: Close-up of D-lines tied into D-spool.

1h35m45s: Tom explains braided/fused line.

1h37m35s: Keep the three D-lines separate while reeling onto spool.

1h39m21s: Pro tip: Mark your spools with "A", "B", "C", and "D".

1h45m38s: Counter sinking hole for M8 bolt the quick and dirty way.

1h47m30s: Inserting 608 bearings again.

1h49m15s: Pro tip: Sandwich spacer tightly between 608 bearings.

1h53m15s: Starting on the ribbon cable.

1h54m40s: Pro tip: Thread a loop in from the top of D-linerollers first to catch the single line from below.

1h58m13s: D-linerollers, D-spool, and D-lines limit where we can place everything else on the ceiling plate.

2h16s: Trying to plan layout of ceiling unit. Stepper cables are short.

2h3m51s: More on the ribbon cable.

2h7m21s: Giving the ceiling plate directions their names.

2h8m3s: Naming convention: B/C are the symmetric/mirrored sides of the mover. A is the third side.

2h8m43s: What to keep in mind for ceiling plate layout.


Part 2

3h28m12s: "Tell the printer to feed out line"

3h44m: "Start leveling the mover"

3h52m1s: "We have six of these Beam Sliders. One on each side gets used for D-line."

3h54m43s: "Let's bring the print bed in place"

3h56m20s: "Home position will be vertically below our ceiling unit"

3h57m24s: Torbjørn uses spirit level on mover

4h2m30s: Using mover as aiming plumb

4h4m27s: Drawing marks below mover pivot points

Now going into an hour of measuring this

Hangprinter XY calibration from above.png

Explanation on RepRap forums

4h10m7s: First mover levitation.

4h12m10s: Measure ANCHOR_A_Y and parallelize A anchor.

4h13m27s: "As long as the lines between mover's pivot points and anchor's pivot points are parallel, then we're good."

4h14m1s: "Let's use the number 230" (cm from anchor to mover). Measuring/deciding ANCHOR_A_Y to be 2300.0 mm.

4h17m47s: Marking out line that is parallel with y-axis.

4h20m53s: To mark out y-parallel lines, start with going through lineroller.

4h25m32s: Placing out C anchor.

4h30m1s: Placing out B anchor.

4h37m25s: Measuring ANCHOR_C_X.

4h39m28s: "This thing is cut square." Getting the 90 degree angle between ANCHOR_C_X and ANCHOR_C_Y.

4h40m25s: Measuring ANCHOR_C_Y.

4h41m45s: "C anchor will have a negative x-position." ANCHOR_C_X is a negative number.

4h42m20s: Measuring ANCHOR_B_X.

4h43m41s: Measuring ANCHOR_B_Y.

4h44m23s: "Let's do some sanity checking." Sanity checker's formula: Sanity checkers formula.png

4h47m53s: "We are going to make two more measurements." ANCHOR_ABC_Z and ANCHOR_D_Z explanation.