I gave up on the CR-10S printer it just never worked well and never gave an adequate result. So I switched to an Anycubic Photon Mono X, and I gotta say, I'm a bit giddy with the results.
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You can see a couple galleries of the two prints I have done on it below:
1/24th scale crankcase
1/8th scale crankcase
I decided that in order to finance this little project of mine I would make some aftermarket engines for some of the larger scale models out there that don't really have good Merlin engines. Just for fun I printed one in 1/8th scale and was just gobsmacked at the results. So I also plan to try and make an even larger scale standalone engine kit, probably in 1/8th or even 1/6th scale.
I am currently working on the lower crankcase assembly, a.k.a. the oil pan. I will update you guys that once I have completed the casting. Thanks guys!