The small 45 adapters that normally come with a record player have always been the bane of my existence.  I created this adapter as an easy on, easy off.  It's easy to grab the adapter and position it.  It's easy to grab and remove.  It is tall and sloped to help guide the 45 onto the adapter as well.  If you're not as coordinated, or the record player is in an awkward position this makes it easier to put a 45 on.

Printing Instructions:

• Material: PLA
• Quality: .2mm Layer Height - Quality or Speed
  • .3mm Layer Height - Draft will work fine as well if you want a faster print with cool layer lines.
• Supports: No
• Brim: No

Note:

I tried the measurements provided by Prusa's contest page.  They did not work for my turntable.  I had to slightly increase the hole for the peg.  The adapter is designed to spin with the 45 and not cling to either the record or the post.  Who wants friction when you're trying to vibe?