Just Trying To Share Some Ideas

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CRC2's picture
Last seen: 11 hours 23 min ago
Joined: 03/27/2022 - 17:32
Posts: 286
Location: Canada
Just Trying To Share Some Ideas

(Edited a bit and added some stuff.)

So I have stumbled into some random ideas that I’d like to share. I think I’ll post them all in this one thread over time.
I am not a photographer or writer at all, but hopefully I can still get these ideas across, to show some things ive accidently discovered that people may not have thought of.

First up will be “fully proud button” tailcaps, (not that unique or original) and some “GITD Resin Domes” Ive added to my Convoy flashlights. (Maybe unique and original?)

I prefer a fully proud button, so my first idea was to simply file off the “extra” material.
I have shared this idea once already when posting some photos of my C8+ and Wurkkos FC12 to the “what did you mod today?” thread.
I have now done it to both an M21B and L21B as well.

This was good enough to acheive the feel and function I was after, but wasnt fully satisfied with the aesthetic.

I also happen to make GITD Resin stuff, and eventually realized I could “Dome” the tops of these tail caps!
Think of how water can be built up on a quarter without spilling over the edge. “Surface tension”.

You just have to be really careful when pouring the resin, not to pour so much that it spills over.
I had it happen once and it wasnt fun trying to clean it all back off. Especially trying to get it out of the inside of the threads…
It’s also just a waste of materials and money.

All I had to use was a triangular hand file to remove the material, followed by sanding it in circles for a while. Maybe you have more sophisticated equipment.

This isnt really meant to be a full tutorial, but if your like me and dont have access to a mill or something “proper” to do the job, it may help to see how I did it with just the file and sandpaper.
I started by using a corner edge of the file to remove the material above the lanyard holes. This removes four nice little chunks and makes for less material to file away.

Next, I start to file the six high areas down to the level of the lowest part of the raised edge. …if that makes sense?

Then I use the corner edge of the file again to make a bunch of evenly spaced notches. Leaving each section just narrower than the width of my file.
I dont know why, this just made sense to me.

Now I start to file it all off by… feel? intuition? I dont know. I just start filing.
Often filing flat across two points, touching the file to two edges across from each other at a time to bring everything down evenly.
Im not sure if that makes sense or not… Hopefully the photo with red lines helps? They reresent the file laying across touching the two spots with red X’s.

(Btw, the black stuff in the center is just JBWeld from where I previously had the Convoy Magnet attached.)

After I have everything down as far as I can with the file, I then use sandpaper to bring it all down to the final goal.

For the first couple, I was just using a piece of sandpaper placed on the flattest surface I could find. My bathroom floor tiles…
Tired of kneeling down to sand these, for the next couple, I got some adhesive backed sandpaper and stuck it to a nice flat piece of thick plexi-glass so I could stand and sand outside.

I hold an even downward pressure on the tailcap while sanding/sliding it around in circles. Constantly rotating the tailcap every so often to make sure It all goes down uniformly and I dont accidently sand a slope into it.
(Attaching the battery tube can help get a better grip while sanding. And when filing.)

Before having the idea of resin “doming” I was just leaving the C8+ caps filed down to this level.
So this is good enough if you’re just after fully proud buttons.

Once I had the resin idea, I decided to file it down a bit further to make sure the resin didnt want to spill over the edges that werent a 90 degree angle.

To “dome”, I use two part epoxy resin.
I think theres two types, and one is better for achieving this “doming” effect.
I dont know a lot about resin though. I just got lucky buying what I bought.
Heres exactly what I use. I found it on Amazon Canada.

This is where you can get really creative.
Just google resin art, or something like “resin dice” to get an idea of how many cool ways you could make these tailcap domes look.
So many cool colors and effects you could make.
Or you could just go matching black on the black ones.
You could even just leave it clear. I think that looks kinda cool too.
Heres a couple photos of what that would look like using water as an example.

(Note: It really helps to use a bullseye bubble level to find a perfectly level spot to sit your caps and pour your “domes” so that they end up nice and even and not sloped to one side.)


I decided to make mine glow in the dark because I already had really great glow pigment from the brand TechnoGlow. This stuff is amazing.
(Photo of just the empty bag)

I also added some green ink to the mix on the C8+ caps for a cool effect.
Kinda wish I did all four like that so they were all different and unique. Oh well.

Here are some photos of my results.

It also looks pretty great with the metal switch, as well as the lighted switches.
With the lighted switch, the light spreads into the resin which is really cool.
Instead of GITD, you can just have MORE lighted switch.
This would probably work best with just clear, or white, or any translucent color really.
Or, you can do both, and as the glow fades, the lighted switch comes through more, so theres this cool transitional period where the two blend together.

If you drop the flashlight and it lands on the resin dome, it can come off.
Its hard to make out, but this photo shows where I dropped my M21B right on the egde, and it developed a bit of a bubble where it started to detach.
Using a blade, I was able to slip it under the resin and pry it off. The resin that was still adheared was still pretty solidly attached, but the dome did pop off in one piece.
So Its not fully permanent. You could probably find a way to pop it off if you didnt want it anymore, or wanted to try a new idea.

I have some more ideas that are just a mess of photos right now. Will add eventually.

Thanks for looking.

Not the brightest flashlight in the collection.

Edited by: CRC2 on 07/27/2022 - 14:17
Scallywag's picture
Last seen: 6 hours 38 min ago
Joined: 01/11/2018 - 22:23
Posts: 2377
Location: Ohio, United States

Haha, we are opposites. I prefer the tailswitch to sit below the edge of the tail. It’s great to see that people like different things, and I love how you’ve made the lights your own.

Last seen: 2 days 16 min ago
Joined: 08/23/2021 - 18:26
Posts: 410

Personally I am not into the“proud” tail buttons.

BUT…. These look fantastic!!! You have modded them to suit what you like and the workmanship is outstanding CRC2!!

Thank you for sharing…. Thumbs Up

brad's picture
Last seen: 3 hours 19 min ago
Joined: 12/04/2012 - 02:07
Posts: 2476
Location: USA

Your work sure makes it look appealing.

Not what we have but what we enjoy, constitutes our abundance.