Hi

I found that the original cap have some problems.

• nothing to hold it when not on the lense

• Heavy (relatively ;) )

• Black... I don't like ... seriously difficult to find if it his lost.

I build a new one, to print with TPU

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You can print it in red ( like I made it) or black and why not pink or some phosphorecent TPU....

If you want the 3D STL... ask I will sent you the file.
If you want some modification same ask...

The result,



I need to attach a small bungee and it is ready for the trip

Seems to me it could use a short lens hood for a bit more protection for the front glass?

8 minutes ago, Chris Ross said:

Seems to me it could use a short lens hood for a bit more protection for the front glass?

I made one for the mfo-1. It is very effective.

Edited November 4, 2025Nov 4 by Dave_Hicks

3 hours ago, Chris Ross said:

Seems to me it could use a short lens hood for a bit more protection for the front glass?

I'm working on it, built a TPU version but it doesn't fit with 82mm cap (which is common for the original lens cap), the Nauticam 57$ m82-filter-holder-for-mfo-3 inspired me to make a refined version, shall be ready in couple days.

3 hours ago, Chris Ross said:

Seems to me it could use a short lens hood for a bit more protection for the front glass?

Not a bad idea... on the other side the MFO-3 is for larger subject.... normaly the glas didn't approach coral or other things...

I have the base to build a short hood I'll make that today

Edited November 4, 2025Nov 4 by CaolIla

Hola,

if you post the STL file or give me a link to it, i will publish in our DIYpedia post

It tooks more time as estimated Printing with TPU need to be patient more that with normal PETG or PLA. It is very slow.

The last version

First print the part on the top was vertical... not good I saw the hood thru the lens
I made a second with a top larger but to thin probably. It is ok but I'm not happy. Now I increase the thickness of the part in the top In 2h now I'll have THE hood ;)

The hood is a little bit visible thru the lens (really only a little bit) but in the water I'm sure it will disapear.

Second version

The hood is 18 mm deep, for surr it will provide a good protection at the front glass of the MFO-3. It is firmly in place it can't be loosed.

If you want the STL, ask I'll sent you the file in a MP.

(Sorry @Davide DB I didn't publish the file, I want to know who is using my "work" to many consumer... and no feedback, it's my point of view please respect that. Thanks)

@administrator It is possible to change the tittle of the subject in " MFO-3 Cap and Hood"

Thank you.
Hugues

Edited November 5, 2025Nov 5 by CaolIla

Hi just started using the mfo3 and finding the need for a cap and hood to protect the lens glass an excellent idea as I am worried about scratching the glass. Is it possible to get the files or what ever is needed to print the components.

I don’t have a 3d printer but I am able to go down to my local library and have it done.

Any help is very much appreciated.

Silicone end caps, 90 mm diameter (I have the Nauticam 82mm filter adapter on it), 3 euros on Aliexpress ...