Even though the JF3 headset is incredibly comfortable, nothing matches custom molded earpieces. The other thing about custom molds is that the sound isolation is superior. What is really great about this headset is the fact that it lends itself so nicely to custom molding. My cost for the custom molds was $10. I did a 1000+ calorie, hour long, extreme cardio workout the other day and became pretty much sweat-soaked--the headset earpieces never came close to coming out and my ears were not sore when I did remove them.
One last item before we begin, the sound quality has jumped significantly. If you read the Amazon reviews (yeah, have to take those with a grain of salt) you will note that this headset does not get any high scores for sound quality. They are good, but no one was saying how they replaced any Shures with them. Of course, you have to keep in mind that this headset is for working out and not enjoying your digitally remastered copy of Dark Side of the Moon. I will say that the improvement in quality after I made my custom set was significant and substantial. Between the improved sound,the comfy fit and the noise reduction my workouts have moved to a higher level.
Step 1: Materials
- EasyMold Silicone Putty
- Single-edge Razor Blade
- Work Surface
The toothpick is used to keep the putty out of the earpiece.
The tweezers may be needed to grab the piece of toothpick out of the molded piece.
The razor blade is useful for trimming.
I used a plastic "cutting board" sheet from the Dollar Store to keep things neat. It's the turquoise you see in the background of the pictures.
Step 2: JF3 Bluetooth Headset
Step 3: 1st Attempt
(B) shows the JF3 without the "secure fit ear cushions". This is just a perfect base for the silicone--the ball shape creates a socket in the mold.
(C) shows the tip of the toothpick, use the "cocktail style". I pushed the toothpick into the hole of the earphone (A) then guesstimated how much to cut off. The tip is used to position the mold in your ear canal as well as keep the opening free of silicone.
Step 4: Sound Hole Plug
Step 5: EasyMold
Step 6: Parts Ready to Mix...
Step 7: Mix Well!
If you do not have fairly equal amounts and if you don't mix them very well, the silicone will not set up and it will crumble. You have been warned, don't ask how I know.
Step 8: Ready to Mold
Press it into your ear and move it around until it is snug. I could feel the end of the toothpick plug against the side of my ear canal and I used that to position it in the center. Keep your mouth open and press the putty around the outside of your earlobe so that you get a good seal into the ear. Also, have the other side in your other ear with the cable around the back of your neck, just like it will be when you are wearing them normally.
Sit back and relax for about five minutes. The putty will get warm as it sets, but nothing at all uncomfortable. It will also make "popping" sounds, not to worry, it just a chemical reaction. EasyMold is FDA safe. I've made a couple sets and worn them as well and my ears have not fallen off and I haven't noticed any rash or anything. If you are sensitive to things, don't do this.
Step 9: Finished
After it hardens you can trim it with the razor if you like. Test the sound. Believe it or not, you just need that tiny hole. You can slice off the end if you like to make the edges of the hole cleaner.