Yep, 30 minuten gets you a perfectly functioning jig that is going to give you a huuuuge return on that investment. I quite like the before mentioned method of getting even spacing but I really do not see the need for that level of perfection.
Let me put that differently; if the hassle of getting a really perfect jig is keeping you from making one, just take 30 minutes and make a perhaps not perfect but very well functioning jig and start making holes.
Or borrow you're neighbors LR32 and make yourself a 'perfect' jig in the same time. [big grin]
But seriously, I've been using way more imperfect jigs for more than 15 years professionally before making this one and have never had problems with those. In the end the 4 holes for each shelve need to be on the same height and all holes need to be
visually equally spaced, no one is going to measure the distances. Both those criteria are easily met with a simple but carefully made and used jig.
Besides, I've noticed the LR32 that I've used did have a tiny amount of play in each hole. Nothing dramatic but noticeable so one could say that isn't perfect either.
Does anyone know if that New Yankee Woodshop episode can be found online btw?
Cheers.