Magnetic Avengers Keychain Holder

Hey all! I came up with this 3D printed decorative wall mounted key holder with 3 iconic avengers keychains.

If we can trust them with the fate of the universe then it only makes sense we can trust them to not loose our keys!

I chose to design this using Tinkercad as I knew it would be best for a simple job like this.

Once fixed onto the wall it will look stylish and show your guest how much of a nerd you really are.

Here is how you can create this magnetic keychain holder for yourself, all STL files are attached.

• 3D Printer
• Plastic filament
• paint (optional)
• 2mmx8mm circular magnets
• Keychain X3
• spray primer
• filler primer
• super glue
• hobby knife

Firstly download the attached files, make sure you have all 4:

• wall.stl
• shield.stl
• hulk fist.stl
• hammer.stl

Next you are going to want to import the stl files into your slicer software of choice, personally I prefer using Cura and have used it for the past 4 years. You are free to position the files however you would prefer, If you refer to the images this is the way I found the models print best.

I recommend you use supports for the models for the best print quality. I printed all parts using 0.12mm layer height to save time sanding in later steps.

Once you have positioned the models and you are happy with your setting and how they will print you can then send it off to your printer, make sure you watch your first layer and make sure it lays down well!

If you are reading and following this step hopefully that means that your print worked! firstly congratulations give yourself a pat on the back, once you have finished praising yourself read on to get back to work.

You will need to remove any support material including brims or rafts so that you prints are ready for any sanding you will need to do in the next steps.

Before we sand and paint our prints I recommend that you do a dry fit to make sure all magnets and prints fit correctly, there is no need to glue any magnets yet. If something doesn't fit quite right you could fine sand that area to make something bigger or using a sharp hobby knife to trim parts until you are happy with it.

Depending on the layer height you used and the quality of your print you may want to sand down your print so that it is as clean and smooth as possible for painting.

If you are happy with how clean your prints are without sanding you can move onto the next step, now we have got rid of all the delusional people I'll teach you my favourite way to smooth prints.

With parts as small as this I would recommend using a filler primer, if you are in the Uk I recommend using Motip spray putty this can be found on eBay. Spray a thin layer of pray putty onto your models one at a time ensuring you are getting full coverage then let it dry for one hour. once it is dried you can using 80-120 grit sandpaper to wet sand your models. You may want to use a tool dig out details to make sure no lines in the model are being filled especially on the shield. Repeat this step until you are happy with the results.

Next you are going to want to use your spray primer of your choice to paint over the filler primer, hold the can 15cm away and do light dusting until you have a full coverage of paint on the model, be careful of drips, if you do encounter any drips they can be sanded down with high grit sand paper and water. leave to dry for 2 hours.

With this stage of the project you have the opportunity to get the creative juices flowing, you may want to paint all the items the same colour like gold or silver to contrast with the background while maintaining a uniform look, or you may want to paint each item a solid different colour, its completely up to you. I tried to make mine look like a comic book style keeping a nice red brick background and bright colourful paints for the items. I used metallic spray paints for the shiny parts and I painted the coloured parts by hand using a mix of paints I have around the house. for the background I'm keeping me primer colour and just making it a bit darker and highlighting the details of the wall using a dark wash consisting of paint and water.

For this step you are going to want to get your 8mmx2mm circle magnets and some very strong super glue, on the step its crucial that you glue your magnets in the correct orientation or your keys will be bouncing off the wall so please do be careful.

Using a hobby knife or something similar scratch up the surface on which you will be gluing you magnet too so that the glue while adhere better. place a small amount of superglue on the print and place your magnet in, try and make the magnet as flush as possible, apply pressure until the glue is dried. Repeat this until all magnets are in place.

When all your magnets are dry and you are happy with how everything is fitting you can add your keychain for your keys to attach to, I will be using standard loop rings as seen in the photo above.

If you are struggling with this step I recommend using a screwdriver or something similar to pry open the keyring.

Now That everything is assembled you can hang it up on your wall and take a few steps back to appreciate what you have created. I hope you have enjoyed this project and if you have any questions at all leave them in the comments and I’ll try my best to help you out!