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Mason jars have standard sizes, standard depths, standard thread size. They are either regular mouth (2 3/8" inner diameter, 2 3/4" outer diameter for jar mouth) or wide mouth (3" inner diameter, 3 3/8" outer diameter for the mouth). The only specification necessary to identify a mason jar lid is the size of jar mouth it is designed for. Steve McDonald [log in to unmask] > -----Original Message----- > From: Code for Libraries <[log in to unmask]> On Behalf Of charles > meyer > Sent: Wednesday, April 3, 2024 6:06 PM > To: [log in to unmask] > Subject: [External] [CODE4LIB] Modifying Mason Jar Lid > > My esteemed listmates, > > I found a mason jar lid on Thngiverse. > > https://www.thingiverse.com/thing:3468220 > > A patron needs these specs > > Top of lid: i ¾ inches O.D. > > Bottom of lid: 113/16 inches O.D. > > Depth of lid: 9/16 inches > > But, Tinkercad doesn't measure in inches and I'm not even sure Timkercads > could achieve that kind of specificity? > > Meshmixer is an amazing prgmnra that I haven't mastered yet. > > What free program would you use to create this with such detail? > > Thank you, > > Charles. > > Caution: This message originated from outside of the Tufts University > organization. Please exercise caution when clicking links or opening > attachments. When in doubt, email the TTS Service Desk at > [log in to unmask]<mailto:[log in to unmask]> or call them directly at 617-627-3376.