I've been thinking about concepts for Balbusting equipment myself for sometime now but wouldn't have the skills or knowledge of how to put them together, so it's nice to meet someone with a mind for engineering.

My idea goes something along these lines:

Take a machine constructed out of a plastic tube/cylinder to place you cock into. Inside the tube/cylinder would be a rubber cock sheef/sock which provides a suction type effect controled by a hand pump, connected to a air tube (hope this is all making sense so far)

Also included in the device would be 2 metal disks which would both connect to the tube/cylinder. The first disk contains a circular hole which is large enough to place your cock through & place on the base of your shaft, but not large enough to allow for the testicles to slip through.

The first disk would interlock with tube/cylinder leaving your cock inside & attached to the sheef/sock, whilst your balls are left sticking out underneath the tube/cylinder through the hole. Now we take a second disk without holes this time which sits on 2 poles attached to the outside of the tube/cylinder which would somehow be attached to the hand pump & air tube.

Now the entire idea behind my device is that everytime the hand pump is pulled, a strong force of suction is applied to the sheef/sock within which the cock is place & in turn providing a blow-job type of effect. At the same time as this is happening, the 2 second disk which is attached to the poles slowly moves up inch by inch with every pump which would slowly crush the mans testicles bit by bit.

Like I said it's always been just an idea, but imagine the fun women could have with their boyfriends/husbands using this device, hands tied behind their back, completely helpless & just left in suspense wondering how far their women is going to go this time???