File information

Last updated

Original upload

Created by


Uploaded by


Virus scan

Safe to use

About this mod

Fixes the the bug that sometimes turns The Pitt added Auto axe Invisible.

Permissions and credits
- 11 March - Added a corrected ground model to the Optional files section.

The vanilla ground model is missing the side chains & while working on it I noticed it's also quite different in other ways to the held model.

For example the blade on the vanilla ground model is placed on the other side of the chain guard (see images in Gallery).
So as well as the missing chains I also made the ground model match the held version.

To use the new version, download "Optional corrected ground model" & follow the same installation instructions as the main file.

It places:



Fallout 3\Data\Meshes\dlcpitt\Weapons\2HandMelee

So uninstalling manually means just going to that location & removing that .nif.

If you use the UF3P this file will replace that version of the ground model.


(1) Short description.
(2)  Long description, More detail for those interested in the what & why.
(3) Installing & Uninstalling
(4) Conflicts & Issues
(6) Thanks & Credits.

(1) Short description

Fixes the the bug that sometimes turns The Pitt added Auto axe Invisible.

(2) Long description, More detail for those interested in the what & why.

The Auto axe from The Pitt will turn invisible upon equipping & activating, usually only the first time.
Users of the Unofficial Fallout 3 Patch (UF3P) will note that has a partial fix where only the blade is affected.

I took a look at the Auto axe model long ago to see if I could fix this bug, tried everything I knew then but was unable to solve the problem.

I recently saw BLACKHAWK1231 post asking about the Auto axe problem & it reminded me of this bug that got away. :)

So I took another run at it, I've learnt a lot more in the intervening years & hoped I might crack it.

My hunch this time was that it may not be the model itself at fault but rather it's .kf animation that controls it when held.

All the settings seemed correct & then I spotted something odd.

The controlling animations for the ##SawBlade are using BSRotAccumTransfInterpolator whereas you'd normally see a NiTransfInterpolator used for simple movements.

The chains, which don't disappear when using the UF3P partial fix, use the normal NiTransfInterpolator.

So I tried to see if the odd BSRotAccumTransfInterpolator could be converted to a NiTransfInterpolator by Right clicking it - Block - Convert - NiT... - NiTransfInterpolator.

Sure enough there was the option to change to a NiTransfInterpolator & the blade's animation was unaffected.

The results in game were that the Auto Axe no longer turns invisible upon use.

I've tested for a bit but not done long term testing, so far there's been no visibility issues.

Turned out to be a very simple fix. :)

Interestingly, after fixing the bug, I went & read Quazzy's entry for the Auto Axe in the UF3P's change log & they had speculated back then that the problem might be animation related. So just goes to show how clever Quazzy is.

(3) Installing & Uninstalling

Using a Mod Manager:

Download manually, right click on the archive & "Open With" Mod manger (FOMM/NMM).

The mod will now open in your mod manager's Package Manager, left click on it & select "Activate" to complete the install.

Don't forget to take care of archive invalidation, the version built into mod
managers often needs to be turned off & then back on again AFTER
adding a new mod.

To uninstall, open your mod manager, open the Package Manager, left click on the mod & select Deactivate.

Manual Install

Download manually, unpack the archive, drag the extracted folder & drop it
into your Fallout 3 folder (not into the Data folder as the package is
already named Data). Say yes when asked to overwrite.

Manual Uninstall:

Go to your:

Fallout 3\Data\Meshes\characters\_1stperson

Delete this file:


Go to your:

Fallout 3\Data\Meshes\characters\_male

Delete these two files:


Go to your:

Fallout 3\Data\Meshes\characters\_male\idleanims

Delete this file:


The mod is now uninstalled & removed.

(4) Conflicts & Issues

This mod replaces 4 animation .kf's - 1st person & 3rd person 2hmattackspin.kf, sneak2hmattackspin.kf & vats2hmattackpower_attackspin.kf.

Therefore it will overwrite any mod added versions of those files when installed.


Q: Doesn't the Unofficial Fallout 3 Patch (UF3P) fix this bug?

A: No, the excellent UF3P never found a complete solution to this bug.
    It was only able to limit the part of the Auto Axe turning invisible to the blade.

Q: Does this clash with the UF3P?

A: No, UF3P edits the Auto Axe mesh (dlcanchautoaxe.nif) & the weapon entry info.
    This fix only tweaks the 1st person & 3rd person animation files that the Auto axe uses.

Q: I notice the dropped version of the Auto axe is missing it's side chains, is that related to this bug?

A: No, the model used for the dropped version (dlcanchautoaxego.nif) is simply missing the chains.
    The UF3P contains a fixed version of that model.

    If there's interest I may upload an Optional file with a fixed ground model for people who don't use the UF3P.

(6) Thanks & Credits

Big Thank-You Kindly to the makers of Nifskope, that essential model editing tool that makes so much possible.

Thanks go to Bethesda for a great game with the fantastic ability to be modded!

Thanks also to the Nexus for providing a safe home for mods, modders & mod users.


Special thanks to CLW, without whom I'd not exist & who's passing has left
me so deeply saddened that there are no words to adequately describe it.

From the Earth we come, to the Earth we return, to live again as a part of something new.