Sara Kit Certification

Build Space

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Main Checklist

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Electronics Checklist

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Build

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Kit Build

Time Lapse

One can study the time lapse in detail to understand the build time. This time lapse should span about 7-8 hours. Rework time was about 1.2 hours.

Time Log

And comments. Time is in minutes. Negative sign - time to be subtracted and added to the Kit Prep phase, not Build Phase. Total time of build does not include negative times.

1. 15:42 - Start. Unpack. Weld frame. Set up camera. Includes going from house to workshop. Time: Frame: 37-
2. 16:19 - Axis assembly start. Y + Z rear. Missing tool: tape spacer. Time: 7
3. 16:26 - Error warning: set screw allen wrench short side wore out mid way. Got another one. Time: -2
4. 16:28-16:34 - Cleaning out idler pieces . Time: -7
5. 16:35 - Tape on bearings. Not needed in practice. Time: -3
6. 16:39 - Finished bearing insertion for all axes. Time: 2
7. 16:56 - Y left finished - Time: 25 minutes
8. 17:03 - Z back finished - Time - 7 minutes
9. 17:15 - Y right, Z front done - Time - 12 minutes. Total for all axes outside of X - 44
10. 17:23 - Y left and Z back axes mounted on frame. Time - 8
11. 17:29 - Y right, Z front hung on frame - Time - 6
12. 17:32 - Thermistor and PEI fix - Time - -3
13. 17:35 - Glue PEI. Time - 13
14. 17:48 - One heat bed nut was too small on the inside. Got another. -10

BREAK at 17:58

1. 18:53 - Nut catcher holes in idler pieces were droopy, reamed out to fit nuts. -2
2. 18:55 - Z platform start.
3. 18:58 - Z platform done (without bed attachment still) Time: 3
4. 19:10 - X axis done. Time: 12 minutes.
5. 19:15 - Y endstop glued on Y axis. Both endstops inserted into holders and one glued in. 5. Started power supply.
6. 19:18 - 5 power supply screws came off. 1 was lost. Power supply power cord zip tie loose and below power supply. Power supply cord fixed to the top. Replaced screws. Time: -7
7. 19:22 - Started control panel. MOSFET dangles forward.
8. 19:37 - Control panel done. Time: 15
9. 19:39 - Extruder sensor did not fit in extruder sensor holder. Reamed. Time: -1
10. 20:10 - Extruder finished - Time: 32
11. 20:21 - X axis mounted - Time: 11. Started cable chain. Missing hole for cable chain. Hole drilled. Time: -8
12. 21:18 - Finished cable chain. Moving to belt pegs. Time for cable chain: 49
13. 21:33 - Belt pegs all inserted and all axes tensioned at one time. Pace slowing down late in day. 14. Also, Most belt pegs were too large. Used smaller ones from inventory. Time: -1. Gluing bed to bed nuts.
14. 21:50 - Glued bed to platform. Includes mixing and application time for JB Weld Kwik Weld. Moving onto control panel mounting. Time: 17.

BREAK at 21:55

1. 22:12 - 1 power wire on back of RAMPS broke off. Second power wire - one wire broke off inside terminal. Resoldered with solid 12 gauge house wire. Did not fit in terminals, so I shaved some off with a knife. time: -18
2. 22:30 - Mounted control panel. Note: way over time. Fought the difficult hole locations for a bit of time. Edges of plexiglass were broken on 2 sides - this should be 10 minutes or less under normal circumstances, but took 25 minutes. So I call this: time: -15. Time: 10.

Tips and Tricks

1. To level print bed for mounting - press down all the way until the bed mounting idlers both rest on the frame - thereby using the frame to determine a perfect parallel to the ground.

Issues Log

1. 2 top half circles of carriage pieces all had extra plastic on them. Needed cleaning.
2. Thermistor head was on top face, not in hole:

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Evaluation

Overall kit evaluation is this based on Kit Certification#Evaluation

Links

• Kit Certification
• Current Material inventory - [1]
• 3D Printer Logs - for parts production