Expandable spool holder for dry Box (Cereal box)

Spool guide that can be extended from 78mm to 90mm

Parts required

1. M3*10mm 4ea
2. 2. 608zz bearing 2ea
3. M4 L-wrenchr:  For assembling the M8 bolt
4. drill, screw driver

Parts that need to be printed in two

1. washer
2. tickness4.2mm_holder OR tickness12mm_holder
3. holder2
4. bearing bolt

PLA

print setting

0.2mm layer

need bim

No support

There are various sizes of cereal boxes.
So I made it expandable.

You can choose according to the inner width of your cereal box.

1.big bolt+big_bong:76mm~85mm

2.+7.5mm_bigbong_ver2++7.5,,big bolt VER2:90mm~105mm

After adjusting the length, secure the rod with the middle nut.

The holder comes in two types: a safe 12mm version and a space-saving 4mm version.

1.tickness12mm_holder

2.tickness4.2mm_holder

It is not easy to make a hole in the cereal box accurately, so I am thinking of making a guide.

I think the M8 bolt and nut may not be printed correctly. 

Anyway, I made it well.

The bearing assembly is here

After extending to an appropriate length, lock it with a lock nut.

The holder is made by making a hole in the cereal box and fixing it with M3.