String Trellis Hook V1.0

This is a tool used for installing trellis strings for growing tomato, beans, cucumber or other climbing plants in a greenhouse.

The tool enables you to easily reach up and put a string or thin rope over a horizontal pipe (or wire, batten etc) rather than lowering said pipe or using a ladder.
It will save you time, and is much safer than climbing a ladder!

I designed it so it can go over anything up to 70mm by 30mm steel battens, if you need a larger size tool let me know.
It fits a standard threaded paint roller extension pole.
I will add a straight broom handle and other threaded pole versions if there are requests for that.

Here's how it works:
1. Tie your string on the small part, lets call it the flapper.
2. Place the flapper in the fork.
3. Hold the string while pushing the fork up into your greenhouse horizontal.
4. Pull down carefully on the string so the flapper connects on the other side again.
5. Pull the pole down while holding some slight tension on the string.
5. If you did it right, the string should have magically traversed from one side of the horizontal to the other.

It is fully functional and tested, but I will update the design based on any 3rd party feedback and further testing.

The dimensions are 189x106x25mm.

I use a brim for adhesion.

I've added in built supports, but use supports for best results.

PETG is ideal.
PLA will work OK but may deform or twist if left out in the sun or if the flapper goes through the wash in your pocket, but in this case you can easily print a new flapper.

Print at 100% infill if you can, anything above 50% should be OK.

After printing you will have to remove the support plug by turning it with a flat screwdriver, then you will have to clean up any other support material with a scraper so the flapper operates smoothly.