doorstopper spring loaded

doorstop you have to use some support, i put it on 10% and it workt out fine,

if you

want a strong one you can adjust the wall thikness.

I had to losen the spring a bit with a small scredriver, and move it a few times to losen it up

watch the video to see how it works

www.youtube.com/watch?v=NvkVflu2Cxc