Hi.

Small question to you guys, does any of you used those festool KV-LR32 connectors without domino using some  diy jigs?

I wonder would that be possible without df500 and all this fancy hardware out there

There are dozens, if not hundreds, of videos showing how a router and other tools can be used to substitute for a Domino joiner.

I don't know what other "fancy hardware" you're referring to, but if you also mean the jig to drill the 15mm holes for the connectors, that one is somewhat essential for the proper placement of the hole, along with the drill bit itself.  If you already have the bit and a stop collar, I'm sure with enough trial and error you could get the placement correct.

If you don't have a Domino or the knockdown connector set, you'd probably be better off with a cross-dowel jig and hardware, IMHO.  The KV-D8 system isn't exactly cheap when it comes to consumables, and the time and effort to make your own jigs wouldn't really get you much of anything that a cross-dowel jig couldn't get you in a fraction of the time.