G
An early Holt 76 Tractor ?
FDM PLA 3D printing - with a model making inclination
- Thread starter Dave Ward
- Start date
It's a Holt 75 - I'm printing the canopy at the moment - I did consider printing the Holt 120 - but that's a bit bigger & printing time was getting close to 30 hrs! I have printed out a BL6" Howitzer for it to tow. The Holt is blown up from 1/100 to 1/35 - is looking good - the only part that really needs replacing is the steering wheel!
The only 1/35 injection model of the Holt 75 is the 2018 Roden version - which has poor reviews & goes for £60+ This model will have taken about 1/3 of a filament spool, so the material cost will be <£5 - I'll be adding pictures of the cleaned up bits tomorrow
Dave
The only 1/35 injection model of the Holt 75 is the 2018 Roden version - which has poor reviews & goes for £60+ This model will have taken about 1/3 of a filament spool, so the material cost will be <£5 - I'll be adding pictures of the cleaned up bits tomorrow
Dave
G
I remember Steve Jones attempting to build one , said it was a terrible kit from Roden.
Keep af it Dave.
The Holt 75 model gasoline-powered Caterpillar tractor. Later models were produced without the front "tiller wheel"
EDIT : Apols , website is acting up , not showing any updates since your original post , then suddenly all the answers appeared,
EDIT : Apols , website is acting up , not showing any updates since your original post , then suddenly all the answers appeared,
Interesting fact - 442 of the Holt 75 were built in Britain by Ruston & Hornsby. The slightly larger 120 had a bigger engine & 4 individual exhaust pipes, but otherwise looks the same
Dave
Dave
Bits all printed - the canopy supports ( bottom right ) need a bit of fettling
Quite pleased with this, so far - and this is for towing
BL6" Howitzer - Both have had failures on the fine handwheels, which I'm trying to print out separately
Dave
Quite pleased with this, so far - and this is for towing
BL6" Howitzer - Both have had failures on the fine handwheels, which I'm trying to print out separately
Dave
I'd ordered some 0.3mm & 0.2mm dia nozzles, to try to improve the detail printing. They arrived - and I've been attempting to print with them - almost like starting 3D printing from scratch! One major difference is the print time - what took about 2 hours with a 0.4mm dia nozzle takes over 5 hours with a 0.3mm one. & even longer with a 0.2mm. I haven't had one succesful print - one failed at 6 hours our of 8. I've tried all the normal tweaks, but that has introduced new errors, including stringing, & layer separation.
I've given up for the time being & gone back to 0.4mm, I just can't be bothered with all the hassle!
Dave
I've given up for the time being & gone back to 0.4mm, I just can't be bothered with all the hassle!
Dave
A snowy morning in Gloucestershire! - not expected................
I've been very much under the weather since the turn of the year, and not managed any benchtime, but I've been hitting the 3D printer.
I found a drydock model, and after a lot of scaling trials managed to print it out at around 1/350 - it is in 9 pieces, for ease of printing................. but it still took around 50 hours in total
I found that my spare filament spool was in this bright yellow!, with a few failures, this has taken the majority of one spool!
This shows the intended use...................
The 1/350 hull of the Trumpeter HMCS Huron. just fits nicely, anyone would think it'd been sized to fit
I do have a few full hull ships that could work, as well - 2 Mirage 1/350 Flower class corvettes.
Now I've printed this, I could shrink this to 1/700, but looking in the stash I've only two full hull ships that would fit - HMS Eskimo & a Liberty Ship ( tight squeeze ).
This is a Graving Dock, used for work below the waterline, such as repairing plates, or simply scraping & repainting - so there aren't any heavy cranes etc that may be found in a repair dock.
Dave
I've been very much under the weather since the turn of the year, and not managed any benchtime, but I've been hitting the 3D printer.
I found a drydock model, and after a lot of scaling trials managed to print it out at around 1/350 - it is in 9 pieces, for ease of printing................. but it still took around 50 hours in total
I found that my spare filament spool was in this bright yellow!, with a few failures, this has taken the majority of one spool!
This shows the intended use...................
The 1/350 hull of the Trumpeter HMCS Huron. just fits nicely, anyone would think it'd been sized to fit
I do have a few full hull ships that could work, as well - 2 Mirage 1/350 Flower class corvettes.Now I've printed this, I could shrink this to 1/700, but looking in the stash I've only two full hull ships that would fit - HMS Eskimo & a Liberty Ship ( tight squeeze ).
This is a Graving Dock, used for work below the waterline, such as repairing plates, or simply scraping & repainting - so there aren't any heavy cranes etc that may be found in a repair dock.
Dave
Instead of benchtime, I've been concentrating on my 3D printing. I've been trying various different settings to improve prints. I think I've been turning out some good models - tanks in 1/72 scale - even at this scale models are taking about 5 hours to print, - at 1/35 they would take at least 3 times as long.
I've been concentrating on British tanks up to 1938/9
Done so far: Mark V Male, Mark IX, Medium Mark A Whippet, Mediuum Mark C Hornet, Mark XIII International, Birch Gun, Cruiser Mk II A10, Cruiser Mk III A13, Light Tank Mk VI, Matilda I A11
Still to do: Medium Mk. II, Medium Mk. III, Gun Carrier Mk I
Having difficulty in finding a decent model of the Vickers A1E1 Independent & some of the minor light tanks, but still looking.................
Some have turned out very well - I've been printing models in one piece if possible. normally recommended for resin printing, but with a little care FDM works ( in 1/72 at least ). I'd put up some pictures - but my camera battery is flat ( not been used for a while! ), so that'll be the priority first thing tomorrow
Dave
I've been concentrating on British tanks up to 1938/9
Done so far: Mark V Male, Mark IX, Medium Mark A Whippet, Mediuum Mark C Hornet, Mark XIII International, Birch Gun, Cruiser Mk II A10, Cruiser Mk III A13, Light Tank Mk VI, Matilda I A11
Still to do: Medium Mk. II, Medium Mk. III, Gun Carrier Mk I
Having difficulty in finding a decent model of the Vickers A1E1 Independent & some of the minor light tanks, but still looking.................
Some have turned out very well - I've been printing models in one piece if possible. normally recommended for resin printing, but with a little care FDM works ( in 1/72 at least ). I'd put up some pictures - but my camera battery is flat ( not been used for a while! ), so that'll be the priority first thing tomorrow
Dave
This is the results of a week or so of daytime printing......................
All 1/72................... Using my favourite Geeetech PLA filament - most are printed in one piece, apart from those with rotating turrets, there are some quibbles - the unditching beams on the Mark V ( too small ), and the Mark IX ( too large ). All will benefit from a careful clean up and a good primer.
These are scaled up & down as needed - one that is missing is the Gun Carrier Mk I - I printed it overnight - it was fine, but it looked too small! I'd scaled it up from 1/100, and either the original scale was wrong, or I dyslexed the scaling factor, so it's reprinting.
Dave
All 1/72................... Using my favourite Geeetech PLA filament - most are printed in one piece, apart from those with rotating turrets, there are some quibbles - the unditching beams on the Mark V ( too small ), and the Mark IX ( too large ). All will benefit from a careful clean up and a good primer.
These are scaled up & down as needed - one that is missing is the Gun Carrier Mk I - I printed it overnight - it was fine, but it looked too small! I'd scaled it up from 1/100, and either the original scale was wrong, or I dyslexed the scaling factor, so it's reprinting.
Dave
HI Dave really like your tanks they look very good very well done
happy modelin
chrisb
happy modelin
chrisb
Gun Carrier Mark I - printed in one piece, with organic supports still attached
A few minutes work with side cutters..........................
A year ago, I didn't think it was possible to print these in one piece, but after a lot of printing & tweaking, I find it can be done.
In this sequence of 1/72 models, I've used about 1/2 spool of filament - ( £13.50 a spool ) I've had no failures ( apart from printing at the wrong size ). I carefully levelled the bed manually at the start, and haven't had to adjust it.
Next up will be the Vickers Medium Mk.I, Mk.II & Mk.III - still looking for a decent Independent
Dave
A few minutes work with side cutters..........................
A year ago, I didn't think it was possible to print these in one piece, but after a lot of printing & tweaking, I find it can be done.
In this sequence of 1/72 models, I've used about 1/2 spool of filament - ( £13.50 a spool ) I've had no failures ( apart from printing at the wrong size ). I carefully levelled the bed manually at the start, and haven't had to adjust it.
Next up will be the Vickers Medium Mk.I, Mk.II & Mk.III - still looking for a decent Independent
Dave
WELL Dave i find this 3D printing beyond me but its comin out very good is it heavy at all ?
chrisb
chrisb
PLA is actually heavier than water, but the models have a surface layer of 2-3 mm & the internal fill is 8% ( think of it as a internal stiffeners ), so they are quite light - but not that strong!
Dave
I struck out on finding a good free model of the Vickers Independent tank, so I had to actually buy one.........all of $10
This is not my model, it's the sellers...........
In 1/56, so scaling down should be easy.
There was only one Independent built, but it's design influenced a few other tanks, like the Soviet T-100, T-28, T-35 & the Gernan Neubaufahrzeug, so it has it's place in tank history!
One model I can't find, even to purchase is the Christie 1931 - or T1 Combat Car - the suspension design was taken up by the Soviets in the BT series & T-34, and the British Cruiser tanks............so another important milestone
Dave
This is not my model, it's the sellers...........
In 1/56, so scaling down should be easy.
There was only one Independent built, but it's design influenced a few other tanks, like the Soviet T-100, T-28, T-35 & the Gernan Neubaufahrzeug, so it has it's place in tank history!
One model I can't find, even to purchase is the Christie 1931 - or T1 Combat Car - the suspension design was taken up by the Soviets in the BT series & T-34, and the British Cruiser tanks............so another important milestone
Dave
Finally ran out of blue PLA - onto grey
1/72 Churchill AVRE with fascune rack
1/72 Sherman BARV
Both need a clean up , but lookng good & ready for primer
Dave
1/72 Churchill AVRE with fascune rack
1/72 Sherman BARV
Both need a clean up , but lookng good & ready for primer
Dave
Whilst most models come in complete parts, some come as 'flat packs'
1/72 Churchill ARK
Dave
1/72 Churchill ARK
Dave
With a minimum of clean up & a few drops of CA.....................
Dave
ps - I'm printing off 2 post-war tanks - Centurion AVRE & Centurion ARV
Dave
ps - I'm printing off 2 post-war tanks - Centurion AVRE & Centurion ARV
In my search for the unusual - both at 1/72.......................
Churchill Mk.I
Alecto - only a 1/76 model appears in Scalemates, so not very common. Info is a bit patchy on this machine - ' several made ', ' limited number produced ' It's small, the hull is only 60mm long!
Dave
Churchill Mk.I
Alecto - only a 1/76 model appears in Scalemates, so not very common. Info is a bit patchy on this machine - ' several made ', ' limited number produced ' It's small, the hull is only 60mm long!
Dave
Universal Carrier - Wasp II in 1/72
I think I've reached the smallest I can achieve with FDM
.......................and yes, I still have failures - this is the 3rd and final attempt to print this
1/72 Rolls Royce armoued car 1914 - not possible with my FDM printer - the front mudguards are just too flimsy.
Dave
I think I've reached the smallest I can achieve with FDM
.......................and yes, I still have failures - this is the 3rd and final attempt to print this
1/72 Rolls Royce armoued car 1914 - not possible with my FDM printer - the front mudguards are just too flimsy.
Dave
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