Witness marks on RDS fasteners

[Tannhauser]

I'm curious what people are using for witness marks/torque stripes on their RDS fasteners?

I recently installed a pair of Holosun 407s, and I used a metallic silver color Sharpie I "borrowed" from my wife's craft supplies.

The sharpie seems like a functional solution, but I was curious if a better option was available. I have no idea exactly how permanent the sharpie will prove to be, so I may need to re-witness at some point.

[Caballoflaco]

I’ve had good luck with metallic sharpie on dots and archery equipment for several years now.

[JCN]

Another +1 to the silver sharpie.

I mark screws at 6 o’clock and I don’t mark the optic.

I can black sharpie the screws and start over anytime.

[Default.mp3]

Sharpie oil-based paint markers for everything that needs a witness mark.

[Pnut]

I use the Sharpie fine tip paint markers or Testor paint markers… which ever I have laying around.

[guymontag]

What I’ve come to value more than the witness mark is a dab of E6000, not saying I don’t mark, but I’ve been very impressed with JCN’s suggestion on the product.

[shootist26]

You can use the edges of two pieces of masking tape to make a line, then fill in the line with the sharpie or paint pen. Boom. Clean and neat line

[WobblyPossum]

I also use silver sharpie.

[Up1911Fan]

Where does the E6000 come into play for optics mounting?

[JCN]

Where does the E6000 come into play for optics mounting?

A couple of places.

I use some on mounting plates to slides to dampen vibration and take load off the plate screws.

I use a little on the plate to optic recoil bosses to dampen vibration and take load off the optic screws.

I use a little on the optic screws. Sometimes I use it instead of loctite.

Usually I’ll put a little blue loctite on the tip of the screws and a dab of E6000 under the cap head.

[Mark D]

Witness marks: Usually I use the silver sharpie.

But yesterday I tried using a toothpick to apply a small drop of yellow paint to the fastener, with another small drop on the optic body, adjacent to the first. I like it so far, but we'll have to see how the paint holds up.

[BCG]

I recall reading a copy of the Guidebook for Marines in the mid-1990s, that mentioned using white fingernail polish to mark the rear sight knobs on the M-16 rifle.

Perhaps somebody who was in the Corps can chime in on that.

[Erick Gelhaus]

I've used metallic sharpies, sharpie paint pens, and neon yellow nail polish. All need to be re-applied at some point.

[ViniVidivici]

Same here, silver sharpie works for me.

[Tannhauser]

A couple of places.

I use some on mounting plates to slides to dampen vibration and take load off the plate screws.

I use a little on the plate to optic recoil bosses to dampen vibration and take load off the optic screws.

I use a little on the optic screws. Sometimes I use it instead of loctite.

Usually I’ll put a little blue loctite on the tip of the screws and a dab of E6000 under the cap head.

JCN how removable is E6000? My Google search says it's marketed as a fabric adhesive. If I use it between an optics plate and slide, or optic and plate, if I need to disassemble at some future point, after removing the fasteners how difficult is it to separate parts with E6000?

[JCN]

JCN how removable is E6000? My Google search says it's marketed as a fabric adhesive. If I use it between an optics plate and slide, or optic and plate, if I need to disassemble at some future point, after removing the fasteners how difficult is it to separate parts with E6000?


Don’t be heavy handed with it. It sticks, lol.

Small dabs in corners and in mating surfaces. I’ll use a razor to get in between to separate it out.

Moderate heat will soften it too if you are heavy handed.

The great thing is that no residue when separated. Rubs off with a finger like rubber cement.

[Tannhauser]

Don’t be heavy handed with it. It sticks, lol.

Small dabs in corners and in mating surfaces. I’ll use a razor to get in between to separate it out.

Moderate heat will soften it too if you are heavy handed.

The great thing is that no residue when separated. Rubs off with a finger like rubber cement.

Thanks for the information and advice.

I have not had a chance to mount a pistol RDS yet, but I did use sone E6000 as part of mounting a Picatinny rail to an in-line muzzleloader. That stuff is sticky.

[GulfCoast]

A little white liquid paper applied with a toothpick. You do have to reapply, but I have had this bottle of liquid paper forever, word processing made it extinct for its intended use, and I don't want it to feel neglected.

[Archer1440]

This is The Way. Resistant to most common cleaning solvents, and the fine line makes it especially obvious if something moves. Been using them for years now, and they really work well. I also write the battery install date on the optic which the fine line is quite suitable for.

Can be removed with pure isopropanol and a bit of scrubbing.

https://www.amazon.com/Sakura-Pen-Touch-Marker-extra-white/dp/B00DUGYIQI/ref=sr_1_3?crid=3K17W1XBQ5H13&keywords=sakura+white+pen&qid=1667303213&qu=eyJxc2MiOiI0LjMyIiwicXNhIjoiMy45MCIsInFzcCI6IjM uNDAifQ%3D%3D&sprefix=Sakura+white%2Caps%2C201&sr=8-3

[HeavyDuty]

This thread reminded me to order a replacement for my missing Sharpie oil based extra fine white paint marker.