Cereal Drybox BETA (w/ 608 bearings + rewind)

I don't have any DAISO boxes, but really liked the project :)  so i've adapted this for the cheap Plastic House cereal containers, of which I have 8.

The exact containers I have are advertised with the following dimensions:  4L volume, 9.3 x 9.3 x 4 inch (which appear to be unavailable now).

These containers have a very tight margin for error and the original shaft holder was waaaay too big.  I've shrunk the shaft so the bearings mount in a slightly recessed way and split the mounts to sandwich the box itself which allows the bearings to be seated in a outward recessed way.

I've provided a hole drilling template as well.

Assembly:

1. Measure and mark the middle of the box with a long vertical line
2. Check your spool has 80mm height (not radius!)
   Measure spool height from the inner hole to the spool's overall tangent
3. Lineup the inside notch of the drill template with the measured center vertical line
4. …
5. Trace the holes
   1. then drill
   2. and deburr
6. add shaft mounts, screw together with M3 screws
7. insert bearings to mounts with bearing plugs and spacers
8. clamp shaft to spool and insert into box
   I had success with “spool-holder_universal_60.stl”
9. add M5 screws, tighten with two hex keys.

You should want the opposite side holes to match.  Repeat steps 1-5

• I made M3 passthrough holes with 3/32" drill bit
• Center hole for the shaft mounts were made with a large step drill bit
  • hole diameter: 30.0mm
• Models named with “sandwich” need to sammich together tightly for a good seal
  • Note that we are still trying to prevent humidity from getting in
  • E6000 optional

Hardware:

• (2) 608ZZ bearings (or similar)
• (2) M5 x 16-18mm FHCS
• (2) M5 nuts (plain)
• (8) M3 x 8mm BHCS
• (8) M3 nuts (plain or locking)

Required parts from original model (not reposted)

• spool-holder_TEMPLATE.stl
• spool-holder_universal_60.stl
• shaft-end_bearing-spacer.stl
• shaft-end_bearing.stl

You should only need to print the models included in this post as well as those listed above ^

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NOTES:

So far, I've converted only one of my 6 cereal boxes.  I will update with more notes once I do a few more.

If you decide to do this, you may notice there is barely enough room and the holder shaft may bulge.

TODO:

• recess bearing mount so the bulge is not as noticeable