1936 leFH 18 10.5cm Towed Artillery

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Postby PainlessWolf » Sun Mar 01, 2020 11:30 pm

Afternoon all!
I finally got the 44' International Harvester KR-11 Lend Lease truck completed so now it is time to work on the Field Piece that it will tow. I remembered when I opened it up that it was a cast resin kit. The manufacturer is MPM and it is certainly intricate with _lots_ of small parts cast with _LOTS_ of base material requiring removal. After removal of finger prints and a nice slash on the left index finger, I have worked out a process and have the right tools to safely remove all that extra material. I will be following up with pics and progress updates a lot quicker than I did with the truck. The kit is 1/15 in scale but who knows what scale the JJRC base truck actually is ( I think it is 1/16 - 1/14 ) so this gun will not look out of place being towed or sitting next to the truck in the tank area. Pics: ( Click to Enlarge )
Attachments
Gifted Kit and Perfect Opportunity.jpg
Gifted Kit and Perfect Opportunity.jpg
A Lot of Resin.jpg
A Lot of Resin.jpg
Instructions are straight forward if a little lacking in how parts go together....jpg
Instructions are straight forward if a little lacking in how parts go together....jpg
Step one involved drilling which was not mentioned at all..jpg
Step one involved drilling which was not mentioned at all..jpg
Steps two and three are done..jpg
Steps two and three are done..jpg
The truck serves its purpose.jpg
The truck serves its purpose.jpg
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Postby PainlessWolf » Tue Mar 03, 2020 4:23 am

Another night, another drill bit in the ol' index finger. ;o) Tonight saw steps Four and Five completed. Thank all the Powers for the Tamiya flexible plastic saw. I might make this assemblage of old resin into a Field Piece yet. Again, the base material covered up pegs meant to mount other parts. Fortunately, I have a goodly length of that metal rod left that came with the kit. Pics: ( Click to Enlarge )
Attachments
Step Four and Five with cleaned up parts for Five.jpg
Step Four and Five with cleaned up parts for Five.jpg
Closeup of the parts for Step Five.jpg
Closeup of the parts for Step Five.jpg
Assembled.  The little trailing arm stops rotate with the arm mounts..jpg
Assembled. The little trailing arm stops rotate with the arm mounts..jpg
A test fit of the two subassemblies produces good results..jpg
A test fit of the two sub assemblies produces good results..jpg
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Postby PainlessWolf » Wed Mar 04, 2020 3:15 am

I was able to spend sometime working on the next two steps ( almost was just one but I'm thick headed that way ) today. Some head scratching on how to let the wheels go round and round was needed. A little careful drilling and some machine screws provided the answer. I want as many of the parts on this model that are supposed to move, move like they are supposed to. Aside from going crazy in brass ( no offense, Barry ;o), I think it will be functional enough. My fingers are cursing me roundly because of all the resin I am removing ( which is slowly removing the tips of my fingers as well). Pics: ( Click to Enlarge )
Attachments
Parts for Step Six pre cleanup.jpg
Parts for Step Six pre cleanup.jpg
Pre cleanup parts for Step Seven.jpg
Pre cleanup parts for Step Seven.jpg
Another view showing the thickness of the gate resin even on these smaller pieces.jpg
Another view showing the thickness of the gate resin even on these smaller pieces.jpg
Six and Seven complete.jpg
Six and Seven complete.jpg
Gun Carriage closeup.jpg
Gun Carriage closeup.jpg
Shovel closeup.jpg
Shovel closeup.jpg
Stowed away for the night.jpg
Stowed away for the night.jpg
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Postby sassgrunt » Wed Mar 04, 2020 5:22 am

You're doing a great job on the kit, (albeit with the parts fighting back somewhat). It will be a great piece to be towed by your truck, as long as the resin towing hitch holds up to that.

I know that the same company also made a resin 7.5cm Pak 40, but I have never seen one for sale. And, other than using it as a fixed gun emplacement; it would also be a good candidate to be towed by something.

Anyway, keep care of your fingers and continue on to what's a very enjoyable build to watch!

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Postby PainlessWolf » Wed Mar 04, 2020 7:01 am

Sass!
Many thanks for the Look-See ( and the Kit ;o) I will probably reinforce ( or replace ) the kit's tow setup with a metal one. Due to the all resin construction, this gun will definitely be a slow as you go tow. ;o) ( one of the reasons I upgraded the truck's electronics to progressive steering and speed control )
regards,
Painless
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Postby PainlessWolf » Thu Mar 05, 2020 5:40 am

I jumped onto the build tonight expecting to knock out a couple of critical steps, 8 and 9. Well, four hours later, Step 8 was done. The large pieces for the gun trails were soaked in extra resin and some of the small boxes required extensive cutting and sanding and cleanup as well. At least we have caisson tonight. I should be able to start priming and painting within a week. I will be satisfied with that. Pics: ( Click to Enlarge )
Attachments
Resin for Step 8.  You would not guess that it was four hours worth of work laying there looking back at you.....jpg
Resin for Step 8. You would not guess that it was four hours worth of work laying there looking back at you.....jpg
Since two sub assemblies were involved along with the huge amount of resin cleanup, tonight only saw Step 8 completed..jpg
Since two sub assemblies were involved along with the huge amount of resin cleanup, tonight only saw Step 8 completed..jpg
Working caisson.jpg
Working caisson.jpg
I will start working on the gun tube in a day or so.  Fingers are beat..jpg
I will start working on the gun tube in a day or so. Fingers are beat..jpg
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Postby HERMAN BIX » Thu Mar 05, 2020 11:58 am

Some days a man wonders why simple s$%t is so hard !!!
Its going to look a treat behind that Soviet lorry mate
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Postby Max-U52 » Thu Mar 05, 2020 2:32 pm

That looks great, Painless. I would highly advise that you use bearings on that axle. Resin doesn't wear very well.
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Postby PainlessWolf » Thu Mar 05, 2020 2:51 pm

Good Morning, Herman,
My hands will certainly have something to say the next time I open up a resin kit. I don't remember the Profiline Kit for the early StuG Ausf B requiring so much cleanup but then there are so many more parts and resin gating involved in this field piece.
regards,
Painless
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Postby PainlessWolf » Thu Mar 05, 2020 3:07 pm

Good morning, Max,
This kit was designed as a display model. I have had to do a significant amount of drilling and pinning to get parts to move so that I could have a towed form of the Gun and a dug in\ready to fire version. The wheels were just stub and hole mounts suitable for gluing together. I drilled all the way though and made a screw channel out of epoxy. The axles are now small carriage screws. This is good resin but as you say, resin is still resin. I don't anticipate a lot of use outside of the odd video and static display but if that ever changes, I can remove and install bearings with this new setup.
regards,
Painless
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Postby PershingLover » Fri Mar 06, 2020 3:31 am

Wow Painless, you are really moving fast! I swear everytime I log in you've got something done! Nice work
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Postby PainlessWolf » Fri Mar 06, 2020 6:55 am

Hello Pershing Lover!
Thanks for looking in. My hands have paid the price for the swiftness of the build. * ouch* ( Well, considering how long I dithered over finishing the truck, I guess it is only fair ) Tonight, I took a break and made a run up North to get some small brass hinges. That armor skirt in front hangs too close to the ground so it will have to work as designed as well and be hinged to lift over obstacles while under tow. I may wind up removing the shovels on the trailing arms and hinging them as well to flip up and over while under tow. I'll have to think on that one.
regards,
Painless

P.S. Here is a link to the look I am going for: https://www.google.com/url?sa=i&url=htt ... AdAAAAABAi
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Postby jarndice » Fri Mar 06, 2020 8:05 am

When I read of the self inflicted harm you are causing to your fingertips I cannot help ask the question we all of us ask, "Am I really doing this for FUN" :lolno:
Your patience with building from a resin kit is both exemplary and a warning.
Brilliant results so far, I shall watch with great interest without the slightest intention of ruining my digits working in such fine detail. :thumbup:
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Postby PainlessWolf » Fri Mar 06, 2020 3:07 pm

Good Morning my Friend.
I hope that the day finds you in fine fettle. ( Fun = Satisfaction?) Thank you! I was sitting this morning and reading your reply while looking at those shovels. A solution presented itself so I will work on them and the armor skirt before I move on to the barrel. This piece may not get a lot of mileage but it should look somewhat authentic while under tow and dug into a firing position.
regards and thank you for looking in.
Painless
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Postby PainlessWolf » Sun Mar 08, 2020 5:57 am

A couple of days away to let the holes and cuts heal up a little and it was back to it this afternoon. Today, I wanted to make the Shovels workable so that the gun could be fitted with a proper tow point. Also, the stiff armor skirt up front was a breakage looking to happen so I addressed it tonight. The resin on this kit is good quality and took to my massaging it with drills and a saw very well. I only had one break and fortunately, it was minor. ( The resin, not my long suffering right shoulder joint ;o) Pics: (Click to Enlarge)
Attachments
Starting out on making the Shovels and Armor Skirt moveable....jpg
Starting out on making the Shovels and Armor Skirt moveable....jpg
Drilling and fitting the Shovel hinge pins before I removed them from the trailing arms.jpg
Drilling and fitting the Shovel hinge pins before I removed them from the trailing arms.jpg
Shovels removed and mounting them underway.jpg
Shovels removed and mounting them underway.jpg
That tow point will be replaced with a metal one pinned into the solid resin of the arm....jpg
That tow point will be replaced with a metal one pinned into the solid resin of the arm....jpg
A spacer for the Shovel mounting arms to prevent flex..jpg
A spacer for the Shovel mounting arms to prevent flex..jpg
Something else I remembered to do, use small screws on the adjustment wheels...beats smooth resin pegs anyday....jpg
Something else I remembered to do, use small screws on the adjustment wheels...beats smooth resin pegs any day....jpg
More finger fun....jpg
More finger fun....jpg
Front armor skirt mounted and moveable.jpg
Front armor skirt mounted and moveable.jpg
A look from the loaders viewpoint.jpg
A look from the loaders viewpoint.jpg
An afternoon and evenings worth of work but worth it....jpg
An afternoon and evenings worth of work but worth it....jpg
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Postby jarndice » Sun Mar 08, 2020 9:55 am

I do like the thinking behind fitting spacers, It surely increases the practical value of making the "Shovels" viable.
This is turning from what most builders would consider to be a semi-static into a practical working model :thumbup:
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Postby Model Builder 4 » Sun Mar 08, 2020 10:03 am

It's coming along a treat painless, great work :clap: The thing with these resin items is that they have about a gazillion parts to them :crazy: if we lived on the same side of the pond I'd send you my kirin nebelwerfer to build for me :haha: :thumbup:

Cheers, Lee.
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Postby PainlessWolf » Sun Mar 08, 2020 6:29 pm

Good Morning,
Jarndice!, if it is big scale, it should move or be moveable. ;o) Lee! Your model and a blank check made out to cash and we're talking. ;o)
regards,
Painless
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Postby Max-U52 » Sun Mar 08, 2020 9:32 pm

PainlessWolf wrote:Good Morning,
Jarndice!, if it is big scale, it should move or be moveable. ;o) Lee! Your model and a blank check made out to cash and we're talking. ;o)
regards,
Painless


You better make that TWO blank checks. Something always comes up at the end, can ya dig it? :haha: :haha:
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Postby Trora » Sun Mar 08, 2020 10:39 pm

you do a great job , i love it you have a clean style in your build proccres

Where you buys the Haubitze ?

Gr Ralf
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