I've been using the logging cars with my Mantua 2-6-6-2 articulated logger and it has been working very well. I plan on making a couple more but given the size of my layout any more than 12 would be overkill. I have 3 other RoundHouse skeleton logging cars and if I get those running that brings me to 7 total. If I print 3 more that would give me the option if having 2 trains of 5 cars each. If anyone is interested getting a logging car, I'll send a free print to the first 5 people that leave a comment here and once the Vine & Branches YouTube channel reaches 10 subscribers. You will be responsible for shipping costs.