after month of constant anger about the two-hand action with my arca and the h3d-back - i triggered the back with my left hand first and then the copal shutter with my right hand.
(unfortunately my old back won't work flawlessly when triggered by the copal sync contact, it requires some milliseconds of head start)
the original on shot cable release from capture group seemed a littlebit bulky and no bargain at all.
finally i found the alpa sync release - great engineered tool, but as i saw the price tag, i thought "man, what is it build of - gold?"
so i decided to build my own one shot cable release.
one double cable release adapter which where used usually to trigger analog cameras with attached bellows for macro shots. 5€ at the second hand store.
and a little switch for about 2€.
finally a ball pen had to became an organ donor for it's spring.
total costs <10€
the tricky part was the triggering sequence.
because the electrical trigger has to come first and still there has to be enough movement for the cable release to trigger the shutter.
it works great, can't wait to shoot my first lcc shot without fiddling arround