Crossbow Without Elastics.

I decided to build a crossbow to entertain me.
I see a lot of plans, but they were most times made of knex and hard to build without electrical tools, thing I haven't.
I choose a sandwich format with a very simple trigger.
to build this I used some planks, screws, nails, a spring, a piece of cord and a construction Iron 6mm, I think.
DON'T use a 6mm construction iron becouse it's too thin. use one about 10mm (1/3 inch)

I didn't give measurements becouse you can build it by your measurements.
anyway, it's about 50cm long, 6cm wide (not counting with the iron) the iron is about 50cm long.

first, mount the trigger, then the midparts, the outside plank and finnaly the iron.