Marlin for my Antique Makerbot Replicator

[curious aardvark]

lol - sounds like a good move :-)

As far as marlin being the successor to sailfish. I believe it was, but a completely different firmware also has the same name.

Personally I have one machine running marlin, and I hate it.
repetier is way more user friendly and the original firmware that camne with both my replica clones is even better.

[Torby]

But it seems I did not get a kit for building a 3d printer, but a kit for updating a 3d printer. I've been a little busy with something else, so I haven't looked at it too closely yet.