This turned out to be a much longer post than I originally intended, but
ecl I want to give you a huge thank you for this thread as well as share my experience making the frog we all know and love!
I followed your direction and patterns in this thread to do a cosplay of Kermit that I'm going to be bringing back every con I go to for the foreseeable future. The level of detail that you put into every post here made this process way easier than I ever could have imagined. I had never sewn anything before in my life, so I was prepared for the first version of Kermit I put together to be absolutely terrible, and while looking back at the first appearance he made does make me very glad that I made some revisions, even that first version had my wife and I saying "It's Kermit!" after just a quick glance. Through all the cons I've already brought him to, the number of times I've heard, "OH S*** IS THAT KERMIT THE FROG?!" has been amazing, and the overall experience is the closest I think I'll ever come to having true VIP status. Instagram even shut down the first account I opened for the cosplay because they claimed I was, and I quote, "impersonating a celebrity."

I had to make sure that the bio of the current account very clearly says "cosplayer" and "parody." I've got a few of the in-progress and out-and-about pictures attached here for y'all to enjoy!
Thank you so much for making and sharing the most easily accessible blueprints for a fine Kermit the internet could have hoped for! Here's my v1 Kermit when he was first finished!
That all said, what this process really drilled into me is that I am not that good at crafting, and I noticed a few areas where 3D printing some parts could supplement my lack of crafting skills while also upping the durability of Mr. Frog for repeated, live useage. Here's the list (if anyone's interested):
- I initially used a ping-pong ball for the eyes, but my dexterity on the crafting there was... less than amazing. So for v2 and beyond, I've been 3D printing the eyes. For v2.0 I used a 0.4mm nozzle, then for v2.1 I used a 0.2mm nozzle which greatly improved the detail. They're a bit hard to clean if they get dirty, and you can see the layer lines if you look close, but from a couple feet away there's no chance anyone's clocking that they're printed. You can also print the washers and screws to save a trip to the hardware store!
0.4mm nozzle print (left) vs ping-pong ball (right)
0.4mm nozzle print (left) vs 0.2mm nozzle print (right) (with mouth plate print in the back-right!)
- I also ended up 3D printing the hand plates. The epoxy-on-cardboard method kept coming undone, so I modeled a hand plate that had holes in a solid block that could just have the wires glued into it while being surrounded on all sides by a permanently attached structure. It also has a space for a magnet so that Kermit will be able to hold things, and has a spot for a clip connector so that I didn't have to permanently attach the arm rod.
- The last thing that I used the 3D printer for in v2 was the mouth plates. Cardboard wasn't flexible enough and the cuts I had with craft foam sheets in v1 were asymmetrical at best. I printed the plates out with a TPU filament that's very flexible and has been responding well to the adhesive I've been using to adhere the mouth felt to it.
Again the 3D printing really just boils down to crafting skill issues here, but clearly I'm much better at designing things in blender than I am with scissors

I'm more than happy to share the .stl files with anyone who wants them!
While the final product is nowhere near completion, here's the upgrades I'm working on with v3:
- 3D printed body core. I have an idea that involves armiture wire in the right arm because currently it's a little too floppy when he talks and the fishing line gets in the way of putting on cosplays for Kermit
- The washers for the eyeballs are now designed so that they can hold magnets against the felt behind the eyes (so Kermit can more easily wear hats)
- I'm refining my Henson stitch technique because I realized I had been making the stitches much too far apart
- I have a Bambu P1S with the AMS attachment, so I tried printing the eyes as a single object, but I think I need to redesign the print file because it keeps printing a noticeable line on the layer where it first shifts from white to black. Not sure how to fix it yet, but the 2-part eyeball is still the best looking option for now
- Using a different sort of fleece that I sourced from Puppet Pelts. The v1 and v2 used their "Greenzilla" Nylafleece, but v3 will be using the "Frog" Fuzzelle. The Nylafleece is softer and stretchier but is prone to pilling. The Fuzzelle seems like it might be less comfortable, but is supposedly based on the original antron fleece that the Muppets used, so hopefully it lasts a little longer without starting to pill.
- Created a pattern for the body covering instead of freehanding it. This only works for this version because I have the 3D printed body that I can base all the geometry on, but I'll still scan and upload that if anyone's interested
- I revised the hand plate design because the glue holding the finger wires in on the last one didn't last as well as I'd hoped. While the wires don't come out of their sockets they do turn in place much easier than I'd like. I'm adjusting it to where the formerly solid block with 4 finger holes now has two parts that sandwich around two U-bent wires. The technique here is that the index and middle fingers are the same wire, and the ring and pinky fingers are the same wire. This will make it so that the wires can't turn unless explicitly turned. I'm going to glue the two parts of the block together around the wires, then use a soldering iron to melt the plastic of the block around the edges (because I've found that mechanical bonds are MUCH more reliable than glue alone)
- Upgrading the log he sits on to be more of a stage with curtains reminiscent of those on the Muppet Show stage
If you didn't skip ahead and made it to this point, I'm amazed at your attention span! Thanks again for reading, and let me know if any of you want more details or any of the .stl files for any of the parts!