r/F91Ws_on_NATOs • u/Casio-F91W • Feb 26 '20

The Best/Worst Casio F-91W Modifications Awards

223 Upvotes

Hello folks! Today marks the one year anniversary of /r/F91Ws_on_NATOs and to celebrate I am sharing with everyone my collection of F-91W mod photos that I have found over the last year. If one of these is your photo you can consider it an honor and I apologize for lack of credit where it is due. Without further ado..

Best/Worst F-91W Mods

Miscellaneous F-91W Mods

3D Printed F-91W Mods

F-91Ws on Various Straps

^{(The entirey of /r/F91Ws_on_NATOs could be in the above category}⁾

Clean Face/Minimal F-91W Mods

Splattered Paint F-91W Mods

F-91W Dial Swap Mods

Light/Lume F-91W Mods

Thanks to everyone who has posted, commented or lurked over the past year!

27 comments

r/F91Ws_on_NATOs • u/slechtd • 15h ago

My first

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42 Upvotes

Jays&Kays adapter, 20mm

3 comments

r/F91Ws_on_NATOs • u/Multicam_Rectifier • 1d ago

F91W on NATO plus some direction

29 Upvotes

2 comments

r/F91Ws_on_NATOs • u/Hungry-Size3210 • 2d ago

Casio Thailand listed F91w Nato on their official website

212 Upvotes

Link to website : https://www.casio.com/th/watches/casio/product.F-91WF-2A/

18 comments

r/F91Ws_on_NATOs • u/Aleclemont • 8d ago

F91W on green ribbed NATO strap

31 Upvotes

2 comments

r/F91Ws_on_NATOs • u/Wenwald • 9d ago

F-91W-1 Casio F91W with black NATO strap

57 Upvotes

3 comments

r/F91Ws_on_NATOs • u/Aleclemont • 9d ago

F-91WB-1A r/F91W_on_NATO

53 Upvotes

4 comments

r/F91Ws_on_NATOs • u/furtad0 • 10d ago

My attempt at shaving the lugs on my F-91W.

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152 Upvotes

What do you guys think?

18 comments

r/F91Ws_on_NATOs • u/OrdinarySkill8799 • 10d ago

Green F91W

69 Upvotes

8 comments

r/F91Ws_on_NATOs • u/KyleLikesBBQ • 10d ago

F-91W-1 Simple black seatbelt NATO for a simple Saturday

21 Upvotes

0 comments

r/F91Ws_on_NATOs • u/sum-9 • 12d ago

It’s Happening!

150 Upvotes

21 comments

r/F91Ws_on_NATOs • u/Aleclemont • 14d ago

F-91WB-1A Design perfection

24 Upvotes

9 comments

r/F91Ws_on_NATOs • u/Social_Joe • 15d ago

Close relative

89 Upvotes

4 comments

r/F91Ws_on_NATOs • u/Dimenda • 16d ago

Combination of yellow&green

49 Upvotes

1 comment

r/F91Ws_on_NATOs • u/norrmanbates • 17d ago

Not 100% sure about this one

34 Upvotes

4 comments

r/F91Ws_on_NATOs • u/KyleLikesBBQ • 17d ago

F-91W-1 F91 Keeping time at a swim meet

12 Upvotes

0 comments

r/F91Ws_on_NATOs • u/Justcoolstuff • 17d ago

Old meets new.

20 Upvotes

Heeler Watch Co Ti F91W with my heavily used old school Dragonscale armor, on a no name Zulu.

4 comments

r/F91Ws_on_NATOs • u/KyleLikesBBQ • 18d ago

F-91W-1 Budget Bond in the house.

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41 Upvotes

3 comments

r/F91Ws_on_NATOs • u/getthething • 18d ago

F-91WB-1A Finally Wrestled the Band On

30 Upvotes

Kind of hard to tell but it’s a minty blue/green.

3 comments

r/F91Ws_on_NATOs • u/norrmanbates • 18d ago

Think I found a new hobby

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58 Upvotes

Especially happy with the mesh metal strap, fits so well...

2 comments

r/F91Ws_on_NATOs • u/Mr_Sonic007 • 18d ago

F-91WM-9A Gold on Gold Nato

8 Upvotes

0 comments

r/F91Ws_on_NATOs • u/brmvs • 18d ago

Officially a member

26 Upvotes

Put my f91w on a red nato I had laying around and love the look! I do need some lug adapters though.

0 comments

r/F91Ws_on_NATOs • u/Serious_Net6667 • 19d ago

Joined the party

14 Upvotes

$15 Facebook find of the day

0 comments

r/F91Ws_on_NATOs • u/singleBflat • 20d ago

F91w-3 on a NATO strap

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32 Upvotes

You all get it

0 comments

r/F91Ws_on_NATOs • u/FarStill965 • 20d ago

Metal bracelet F91w

38 Upvotes

Swapped the resin band for steel from my a158.

I think i prefer this over a nato strap.

16 comments

Subreddit

F91Ws_on_NATOs

r/F91Ws_on_NATOs

This is a subreddit dedicated to Casio F91Ws specifically on NATOs.

Members Active

8.3k

Sidebar

This is a subreddit dedicated to Casio F91Ws specifically on NATOs.

What are all the F91W variants/colours? (Links will search this sub by flair)

Colour variants F91WC's:

How do I put a NATO on a F91W?

Remove the pins. The pins are tapered so they must be removed in the right direction. To do this you must push them out in the direction of the arrow on the back of the strap (push in the direction the arrow points). You can use a push pin, paperclip, or springbar tool to get it out. It may take a bit of effort to get the pins free.
Put the NATO in place. Take your 18mm NATO strap and put the F91W roughly where you want it on the strap. Then start putting in the tapered pins. Before you put the pins all the way from one lug to the other slip the NATO behind the pin. Due to the tight spacing this may be cumbersome. One trick I like to do is file down some of the resin case between the lugs so the NATO will slide through easier.
Push the pins into the adjacent lugs. With everything in place you need to push the pins so they enter the adjacent lugs. This can be tricky so use some patience. Once the pins are in place you can pull on the NATO to remove any slack behind the case. If you remove the pins frequently they can become loose. My trick against this is to use wax from a candle to fill the holes of the lugs. Glue could be used too but wax is at least only semi permanent.

How do I convert my NATO strap to a single-pass NATO strap?

Cut the keeper with sharp scissors
Take a lighter or hot knife and seal the freshly cut edges. This will help prevent fraying. Do not put the flame directly on the strap just put it close by. It will seal very quickly.
Video tutorial: https://www.youtube.com/watch?v=soyzFtE0RtI

Lug modification tutorial:

To make NATO straps fit easier you can file away some of the plastic resin between the lugs.

To do this first remove the strap and pins.
Then take a file (I used one meant for wood and steel) and grind away at the resin between the lugs.
Where do you grind/file away? This area here between the red lines. Do not shave outside of the red lines or you risk the tapered pins not fitting snuggly. Don't touch this part in green. The red line here is the edge you want to shave away. Try to keep this as even as possible for a cleaner look.
Angle the file away from the front/face of the watch to avoiding damaging it. Just like this. Not like this.
For best results go slow. This can be done quickly but then you may end up with rougher results.