yes, I had to use blue tack for the finished units.

I had some thin rosewood veneer I used for the faceplates.  The shells are made of UV adhesive I got on ebay (Kafuter).  Measurements are below.  Fairly flat.      

My latest iteration. After at least five tries, I think I hit the best sound yet. I can honestly say this is the first time I feel my diy customs really sound better than my universals. I used a four driver setup. I never believed anything more than three drivers would make a difference, but I'm...

Two words, poster tack. Works great.

I just did this.  I used silicone from Smooth On.  I got a two part clear silicone kit.  For my mold, I follow the same process as an acrylic. I use krystaloid that I bought from lightning enterprises for my mold material.  I then make a hole in the mold where I expect to put my sound tube.  I...

I've been using the guts from an apple ADDIEM.  This is some kind of modified knowles GQ driver and looks like a WBFK/ED combo.  This unit is great for silicone as I get a two way design with a single tube.  In my acrylic shells I have more space and can do a more traditional design with...

Thanks for the tip. I think I'll rip these apart and try making them again. Overall sound is similar to acrylic. Haven't been able to tell much difference, but I fing the isolation and fit much more comfortable.

Not the silicone,but was more worried about other materials in the two part mix.

I've been wanting to make a silicone custom IEM for some time. I finally got around to it after some experimentation. I chose some two part food grade silicone from Smooth On. I plan to use them just a few minutes at a time until I verify I get no allergic reaction.

Thanks, do you coat your ear impressions in wax or build up the impression in any way before casting in the gel?   Thanks

I just want to see a side by side of the ear impression compared to the final IEM from different views.  I'm curious to see how deep from the second bend and if there is any additional build up needed to improve seal.     Thanks

I do have an impression that goes past the second bend. I think i need to try making another resin copy. The current one has too much build up and lost the detail of the second bend. Can anyone send me a picture of their earmold compared to the final IEM. Thanks for the tips.

My first attempt at a three way. CI/ED/WBFK. CI makes a huge improvement on bass. I still have trouble with fit. Mostly mine come out too large and end up hurting after a couple of hours. A made up a resin based copy of my earmold that I built up with layers of nail polish. Either they hurt, or...

 I did this some time ago.  I took apart a plantronics backbeat GO and stuffed it inside the shell.  The backbeat go uses micro usb for charging.  I used a 3.5mm headphone jack instead (you can see that plugged into the side).  Worked well until the battery died on me.  Only lasted about 3...

looks good, can you provide the details of your design?

So I just made a hybrid using a Sony MH1C as the mid/woofer with a wbfk as the tweeter. I put a series 10uf ceramic cap and a 100 ohm series resistor with the wbfk. I didn't realize how much I missed the bass of a dynamic. I need to do some more experimenting on the tube design to improve the...

I thought you couldnt use inductors with CIEM given the close magnetic field of the drivers. Are these shielded?

Where did you get the LEDs from?  Thanks

I've been trying to get somewhere between 1mm to 2mm. I only have one UV bulb, so I built a small turntable to rotate the unit to get uniform curing. This works well for me. The time has vary significantly since I have been trying different tint colors. I just keep checking the cure frequently.

Yes it is possible, you just have to be careful and apply as thin a coat as possible, but not so thin that the material streaks.

What I do is sand the edges after I put the faceplate on with a dremel tool and flapper sanding disc. Then I apply a thin topcoat of UV acrylic on the whole shell and cure. I hang the unit using wire inserted into the connector when curing. Then a let it cure for a long time. This is the only...

Actually my intent was not about seal, but trying to mimic the actual dimensions of the ear and impedance it presents to the custom IEM.  From my own earmolds, I know I have quite a bit of difference in the diameter of my left and right ear canals.  I thought this might be a better of way of...

Anyone try and use a negative impression of an earmold as part of a measurement setup. Seems to me this would be the best way of tuning an iem. The trick is knowing the distance/volume from the ottoblock to the eardrum. But it could allow for optimization for differences in left/right earsize...

Had some time and started experimenting with different tube lengths and tube styles with a GQ driver.  My goal was to try and improve the high frequency extension.  The results are promising with my crude measurement setup. The green trace that was from a stepped design shows considerable...

Anyone try making a deep insertion custom shell, some of the companies call them Musician fit?  I'm looking for ways to improve isolation.  I've also seen silicone filled IEMs, anyone try that?