Minolta/Sony A-Mount to E-Mount with aperture control

Materials Required:

• M2x10 Screws
  https://www.amazon.com/M2x10-Button-Socket-Screws-Stainless/dp/B07QFW5D2V

• M2 Inserts
  https://www.amazon.com/HANGLIFE-Heat-Set-Threaded-Printing-Components/dp/B0CS6XJSSL/ref=sr_1_3?crid=274O1R8G8R0DG&dib=eyJ2IjoiMSJ9.58sXJwFJpXM1MxmBPwIDUSdvbGiIwrAPv6rRnblLPLvWbTvYmun3n0ARAlcDeB3vAKBvyw9hulDKU-8RpQbTZa8c5veRrCjNT9M4sp6qrTFPVCaeWn85sMaqyi6DaiFcwfY3z5kAuPGwqrK3b9pDDaHsuuMtaai2Fups2C1neuIsmrMOfgA_1ufXInh34nT_bQAq_qcMuRgcMVRNEeNUXCog5VohzxIscfFK-br163Q.LiE3Q4Q_fC4iK-pz4tFK-3AAI1P_0oFVnZ9rlIT0xio&dib_tag=se&keywords=m2%2Binserts&qid=1733578862&sprefix=m2%2Binserts%2Caps%2C151&sr=8-3&th=1

• Compression Spring:
  Dimensions: Outer Diameter (Da) = 4.5 mm, Inner Diameter (Di) = 3.5 mm, Length = 10 mm
  https://www.amazon.de/Metallfedern-Drahtdurchmesser-Druckfeder-Au%C3%9Fendurchmesser-10PCS_0-5MM/dp/B0CTJYHK7X/ref=sr_1_57?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&crid=16RCOOD532FCH&dib=eyJ2IjoiMSJ9.6B7KazOcIYiMM1unQ6IkfDjHkl5dfO8b_N7ZxKe3WkiSJSzcm-n6_yxQhE4gZnMmTQLvok65g4mLn2X_DRIXbfxIoOs5ATLaW4CwuPpCcGXn7k_3TyIWJ3NeB2V9MA4ALbonkX4KdsqevQWAWt6-M5dWiMtWg_wCNK-Bb4KgOHRlDOHHkVEyqlDgN9ylboQqeYMZK_Y_7P-J1S1jwEKI8hKx6rdgBUsNHeeR-aTOwUiltjjGM9ZpA6CftiCJBox0whv9re6zy4uVZFwipsRrILNnL1iSt-v5cofv9DHPeuM.byf-f4SOaPIVpJ4nOgBM_e7qwNbB6dw2D8PvDbVI25E&dib_tag=se&keywords=compression%2Bspring%2Bdrahtdurchmesser%2B0.5&nsdOptOutParam=true&qid=1733579283&sprefix=compression%2Bspring%2Bdrahtdurchmesser%2B0.5%2Caps%2C65&sr=8-57&th=1

Tips:
Instead of purchasing a compression spring, you might be able to repurpose one from a ballpoint pen.
If M2 inserts are unavailable, let me know—I can provide a modified version of the file that doesn’t require them. In that case, screws will self-thread directly into the plastic. However, this connection may not be strong enough for heavier lenses, so use caution. I cannot take responsibility if either version of this adapter breaks or causes damage to your lens.

Have fun assembling this project! If you run into any issues or have questions, feel free to reach out—I’ll be happy to help

Print Settings

• Printer brand:

  Creality

• Printer:

  Ender-3 v2

• Rafts:

  No

• Supports:

  Yes

• Resolution:

  0.2

• Infill:

  30

• Filament material:

  PLA

• Notes:

  I scaled the parts to 101.5% to compensate for my printer’s tendency to produce slightly undersized prints.