Scratchbuilt Churchill Mk.IV AVRE 1 troop D. Day

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MonsieurTox
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Posts: 634
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Scratchbuilt Churchill Mk.IV AVRE 1 troop D. Day

Post by MonsieurTox »

Hey guys, here we go again !

My first Churchill is a great runner, one of the best I have (Tamiya tank included), I was not expecting that when building it. But the other day, I was running it in the park and I lost a wheel, I never found it. I had to print another one, not a big deal, I had the file... wait, while I was browsing all the files I created for the Churchill to find the wheel, I realize I did a lot of work and that building a second Churchill would be super fast. So I ended up printing the missing wheel... and a whole new set of wheels for a new Churchill.

2 days later I had that :
churchill-V2_1.jpg
churchill-V2_1.jpg (662.23 KiB) Viewed 264 times
churchill-V2_2.jpg
churchill-V2_2.jpg (759.32 KiB) Viewed 264 times
churchill-V2_3.jpg
churchill-V2_3.jpg (745.1 KiB) Viewed 264 times

When I was building the first AVRE, I knew it would be a SBG and I was quite frustrated because 80% of the SBG and I think 100% of the ones that landed on D-Day, had the early tracks (I had the late metal ones made by DKLMRC). I always liked the early tracks better on the Mk IV and previous Churchill version. No question regarding the Mk VII obviously. :)

So I designed the early tracks, using photogrammetry of an original one to be as accurate as possible.
churchill-V2_7.jpg
churchill-V2_7.jpg (361.08 KiB) Viewed 264 times
churchill-V2_8.jpg
churchill-V2_8.jpg (367.96 KiB) Viewed 264 times
churchill-V2_9.jpg
churchill-V2_9.jpg (381.66 KiB) Viewed 264 times
churchill-V2_10.jpg
churchill-V2_10.jpg (352.02 KiB) Viewed 264 times
But I did not want to print them on a FDM printer. I would lose details, I never been able to print correctly track links with that kind of printer and most important : it takes forever.
I wanted them to be resin but I was affraid they would not be strong enough.

I did a print test with some Siraya resin. It was quite promising but very brittle :
churchill-V2_4.jpg
churchill-V2_4.jpg (561.55 KiB) Viewed 264 times
churchill-V2_5.jpg
churchill-V2_5.jpg (637 KiB) Viewed 264 times
churchill-V2_6.jpg
churchill-V2_6.jpg (567.64 KiB) Viewed 264 times
Then I came across one of @tankme 's thread : viewtopic.php?t=36203

He mentionned he used Sunlu toughness resin and that the tracks were performing well. I had to try. And I did. It's the best resin I have ever used for tracks ! It's strong but a bit flexible, so the parts won't break.

I now have printed the set of 2 tracks with that resin. They are great, can't wait to try them !

Well I initially wanted to make a MK III at Dieppe to show the tracks (they only had a small portion of the track guards installed) but after staring at pics of the real tanks and pic of my first churchill under construction without the track guards, I came to the conclusion that I prefer the look of the Churchill with the track guards. And with the MK IV turret... And with the spigot mortar...

Oh well you got me, I'm building another Churchill Mk IV AVRE ! :headbang:

But it's going to have some difference :

-First, the tracks of course.

-I modified some of the parts for ease of use or maintenance

-I am 3D modelling some new parts because I was able to take pictures of a real AVRE (the one I used for ref my first Churchill was a regular Mk IV) so I'll be able to use photogrammetry for the AVRE fittings.

-I am re modelling a new side hatch using photogrammetry this time, the frame of the first one was a bit off but I'm sure I wont notice the difference when both Churchill will be side by side !

-I am doing the other style of door hinges, they'll have square corners, the ones I made had round end, small design difference, not sure when it changed during the production of the real thing.
Last edited by MonsieurTox on Sun Jun 15, 2025 11:03 am, edited 1 time in total.
My parts for 3D printing :
https://cults3d.com/@CaptainTox
MonsieurTox
Sergeant
Posts: 634
Joined: Thu Nov 04, 2021 4:30 pm
Location: Paris

Re: Scratchbuilt Churchill Mk. ?

Post by MonsieurTox »

I don't know which Churchill AVRE I'm going to replicate.

I have a few candidates :

-my fav is "Cheetah" that you can see in this famous picture :
CHEETAH_T 172053 C_2.jpg
CHEETAH_T 172053 C_2.jpg (352.95 KiB) Viewed 258 times
Cheetah was one of the few log carpet AVRE. There are not a lot of documentation about these tanks, and not a lot of photographies of them before they dropped their logs...

You can see the device on this other log carpet AVRE (unfortunatly it has the late tracks) :
1A and 1D 80 Aslt Sqn RE's Mobilisation Serial Number 30360 is painted on the front of the offside front mudguard side, then a slash '', which was  followed by the chalked LCT Serial 1408.jpg
1A and 1D 80 Aslt Sqn RE's Mobilisation Serial Number 30360 is painted on the front of the offside front mudguard side, then a slash '', which was followed by the chalked LCT Serial 1408.jpg (2.13 MiB) Viewed 258 times
The commander of this Churchill, was killed a few hours/days after these pics were taken.

You can see him in the turret with a helmet :
22628787446_cc9b85415a_o.jpg
22628787446_cc9b85415a_o.jpg (498.45 KiB) Viewed 258 times
Same tank embarking in the LCT, read to go to Normandy :
1D.jpg
1D.jpg (104.14 KiB) Viewed 258 times
You can notice the log device. Probably the only ref pictures, this is actually a still I took from a video.

You can notice the Churchill is painted SCC. 15 while the deep water devices were not repainted and are still in SCC. 2.

Some devices were repainted SCC. 15 so you could find any combinations ! :)
1D and 1F bis.jpg
1D and 1F bis.jpg (129.22 KiB) Viewed 258 times
1D and 1F.jpg
1D and 1F.jpg (114.19 KiB) Viewed 258 times
Those are not colorized, that was filmed in color. Very precious stuff !

Other candidate, BUlldog, but it is another AVRE SBG, it has the rounded hinges on the side hatch doors, and the AVRE fittings are not installed (only the welded frame) :
bulldog.jpg
bulldog.jpg (1016.94 KiB) Viewed 258 times
My parts for 3D printing :
https://cults3d.com/@CaptainTox
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