Solar Finder-Scope for standard telescope mount

WARNING: ONLY USE THIS IF YOUR TELESCOPE HAS A FULL-APERTURE SOLAR FILTER OR YOU COULD BLIND YOURSELF!!!!

Second Update:
Waiting for the Mercury transit, this thing is great!! as soon as i ger the first pics i will upload it here.

First Update:

I Finally have some good conditions in my city to test the finder. I upload some images of the thing.
And...
Works nice!!!,

The first time you use it, you have to draw a little point or any other mark in the position of the projected point in the finder base, where the sun is in the center of the ocular.

This is a remix using thinkercad, the editable source is at this link:

https://tinkercad.com/things/2uXa6XaYh42

It is mostly based on the excellent work of

http://www.thingiverse.com/thing:972686

and using the base of:

http://www.thingiverse.com/thing:608140

Thank you for your lovely designs. I recreated them in thinkercad,

I use a paraboloid instead of a sphere. Mostly because it is easier to print and do not need any support material. But if you still like the original spherical design it is also included.