Doing some research on the Prusa XL, the consensus seems to be that the XL is considered a "high-end" 3D printer, and a poll of potential buyers shows that the majority either find the XL price too high, or are going to wait and see if the XL lives up to its features/hype.
One about 1/3 of the poll said they would purchase an XL now.
The high-end users said they are interested in an XL because it would provide them with a commercial-grade 3D printer that would be very cost effective for their application.
One of my goals for purchasing an XL is to try and recreated the patterns for some of the more popular model engine kits, such as the Ball Hopper Monitor, the Frisco Standard marine engine, a bottle steam engine, perhaps a Dake, and a horizontal O&S steam engine.
I have purchased a few casting kits in the past, and my main complaint is that the kits are so small (small being relative to what each individual considers "small") that I find them very tedious to machine, and very unforgiving with tolerances.
The slightest miscalculation on small parts, or a little too much machine tool flex, often causes some very difficult alignment problems during assembly.
My eyesight is not that great these days either, and I have difficulty seeing scribed lines on small parts.
I have never felt constrained in any way with having to build small model engines, and in fact I prefer small working-class engines which sometimes are larger than a typical model engine.
I define a "working-class" small engine as something like the Cretors line of steam engines, such as their No.1, 2 and 6, which were made to work with a small load all day every day, without any excessive wear problems.
The Cretors engines all had poured babbitt bearings, and the book that was written by the Cretors folks mentioned that the intent of the original Cretors steam engine designs was to build engines that never had to be returned to the shop for repair.
I have a Cretors No.01 that must be 100 years old, and the wear on the various parts and bearings is minimal.
Generally the most wear on a Cretors engine seems to be at the crank pin and associated bearing.
I intend to use poured babbitt bearings for any engine I cast.
The green twin oscillator shown in my avatar is another example of a small working-class engine.
The original green twin oscillator was build apparently in England, is a very high quality, robust, professionally made small engine.
Photo attached of the original green twin oscillator from Prestons Services.
My guess is that this engine could have been used on sewing machines, machine tools, etc., and its non-dead-center design and easy reversing would lend it to many applications that require those features.
The original green twin shown below has a 10" diameter flywheel, but was advertised as a 12" flywheel.
Had I known that the original green twin flywheel was 10" diameter, I would have made a 1:1 scale replica of it.
Indeed I may print 1:1 patterns for this engine on the XL, since I have the design in 3D.
