sold 2 the tr-101ct. Have 4 or 5 in (near) flawless condition, shells were removed and they are stored in pieces. Got at least one magnifier. Fortunately none of mine have broken but I do whisper thir disassembly.
Don't have a 3d printer. Do a vacuum chamber suitable for resin casting in this size. Don't have much experience with it yet though for this application.
dusty