About this 3D model

✅ What this is: This is a Small‑Printer Mod for the 737 MTU (Motorised Throttle Unit) that splits the large case pieces so they can be printed on 220 × 220 mm beds (instead of 300 × 300 mm). Each section features generous overlap/tongue surfaces for reliable bonding, and select joints include screw points for extra strength. The result: you can build the full‑size MTU on a smaller machine! No need to buy a bigger printer. Important: This download contains only the split, printable STLs for the outer case pieces. You’ll still need to purchase the full MTU (STL or CAD) files separately to complete the unit. Why it’s essential Unlocks small printers: Print the MTU on common 220×220 beds (Ender/Prusa‑class), removing the 300×300 requirement. Stronger than it looks: Overlapped seams create large bonded areas for a robust shell when glued with cyanoacrylate (superglue) or 3D Gloop; selected seams accept additional screws for mechanical reinforcement. No geometry compromise: The exterior dimensions and fit are preserved, only the printability has changed. Community‑driven: This mod was highly requested by builders who didn’t want to upgrade hardware just for the MTU. What’s included Split STLs for the formerly one‑piece (or oversized) MTU case components Built‑in alignment/overlap features to guide assembly and maximise bond area Parts map & file naming that match the original MTU structure for easy orientation What you’ll also need (not included) The original MTU files (STL or CAD) Basic hardware specified by the original MTU build (fasteners, electronics, etc.) Adhesive: Superglue or 3D Gloop (recommended) Optional: small screws for the reinforced seams noted in the model Print & assembly notes Bed size: Designed for ≥ 220 × 220 mm build plates Material: PLA+ or PETG both work well; PETG offers a little more toughness Layer height: 0.2 mm typical (go finer on visible faces if you want minimal finish work) Infill: 15–30% for shells; increase around screw‑reinforced sections if you prefer Bonding: Dry‑fit first, then glue overlapped joints; add screws where indicated for ultimate rigidity Finishing: Seam lines can be skim‑filled and sanded if you plan to paint the enclosure Context & inspiration (credits/remix info) I initially didn’t think this would be possible. The case is structural, but with careful slicing, well‑sized overlap lands, a bit of glue, and a few extra screws, the MTU can now be built on small printers. Build guide: Please follow the dedicated print & build guide here (step‑by‑step photos, tips, and orientation advice): ? https://www.737diysim.com/build-guides-1/boeing-737-motorised-throttle4-small-printer-mod Designer: 737DIYSIM (Karl) Limitations/things to know Glue‑up required: Expect a methodical bonding process; allow full cure time before handling or loading. Seam visibility: Seams are placed to minimise visual impact, but light finishing may be desired on show faces. Strength vs. weight: The mod preserves strength for sim use, but abuse or over‑tightening hardware at seams can still cause damage; tighten gradually!