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1/72 scale 3D printed prototypes and proposed projects

zanenobbs

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Yes, too fine detail to really work with the FDM printing but am revising these models for resin printing which should easily cope with addition of interior detail, control surfaces and landing gear

For the resin printer I'm familiar with (Shapeways FUD material), 1/72 landing gear would be quite fragile, I don't think it'd be able to carry the weight of the aircraft.
It depends a lot on the printing technology, resin choice, extent of cure/crosslink density and any filler/reinforcement - materially and with the right design choices I think I can probably make something work. Needn't all be done in one print so can lightweight the airframe and print the wheels, struts and doors in one element in a more sturdy resin system to try and beef up their load bearing capacity. Worst comes to worst I can always do undercarriage in SLS metal so it is in titanium or steel and the rest in resin
Thank you! I like to have my aircraft on the landing gear. Would you be able to do requests if all of the drawings, photos, and dimensions are provided?
 

lostcosmonauts

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Thank you! I like to have my aircraft on the landing gear. Would you be able to do requests if all of the drawings, photos, and dimensions are provided?
[/QUOTE]

Umm... I don't really do this professionally but as a rough guess (without seeing the drawings or how intricate and complex the design is) be 2-3 days of work to draw up, get feedback from you and then tweak a decent quality 3d design. You'd be looking at anything from free (It is something I'd want and do just out of my own interest, I retain all the rights to the design giving you a copy of the model as a thank you for the reference info) to £400-600 (It is a design I'm not interested in myself and I hand over the file retaining no rights over it) Someone who does this professionally and with more experience would likely be able to do it quicker and give you a more detailed quote.
 

zanenobbs

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Thank you! I like to have my aircraft on the landing gear. Would you be able to do requests if all of the drawings, photos, and dimensions are provided?

Umm... I don't really do this professionally but as a rough guess (without seeing the drawings or how intricate and complex the design is) be 2-3 days of work to draw up, get feedback from you and then tweak a decent quality 3d design. You'd be looking at anything from free (It is something I'd want and do just out of my own interest, I retain all the rights to the design giving you a copy of the model as a thank you for the reference info) to £400-600 (It is a design I'm not interested in myself and I hand over the file retaining no rights over it) Someone who does this professionally and with more experience would likely be able to do it quicker and give you a more detailed quote.
[/QUOTE]
Okay! Thank you for your kind response!
 

lostcosmonauts

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Another model in progress... Armstrong Whitworth AW.58 which would have been a contemporary of the English Electric P.1 and the Fairey Delta 2
 

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lostcosmonauts

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After a bit more work and some tweaks I kind of came round to the AW.58 & did both the swept wing original version and the larger Sapphire engined tailed delta derived from it. In time both will be printed, painted and get decals.
 

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lostcosmonauts

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Finally got around to working on the 1/72 model of the Fairey Delta 3 today and got as far as putting some (entirely made up) markings on and mounting it on a stand. Not the definitive model but good enough for me to see what works/doesn't so that I can redo it in resin with more detail, wheels etc.
 

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lostcosmonauts

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Back to square 1 with a couple of these. I'm going to go back to the Miles M.52 and the DH 108 to refine both for resin printing adding detail, cockpits, wheels etc. Going backwards to go forward
 

riggerrob

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We are curious as to why you are preparing models to be molded in resin.

How does the cost of 3D printing compare with resin-casting?
Where is the break-even point (number produced) when resin become less expensive for production.

This reminds me of a project that involved 3D printing dummy .50 calibre ammunition on my Ender 3. They first cartridge was printed the evening of the day that I received the request, but it took the rest of the week to print the rest of the order.
Hah!
Hah!
 

Hobbes

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um, he said "resin printing", which is a high-resolution 3D print process.
 

lostcosmonauts

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We are curious as to why you are preparing models to be molded in resin.

How does the cost of 3D printing compare with resin-casting?
Where is the break-even point (number produced) when resin become less expensive for production.

This reminds me of a project that involved 3D printing dummy .50 calibre ammunition on my Ender 3. They first cartridge was printed the evening of the day that I received the request, but it took the rest of the week to print the rest of the order.
Hah!
Hah!

I'm not - I guess poured polyurethane and epoxy resin casting from moulds is probably about on parity for cost of materials and quicker at present but resin printing should be cheaper and get faster as the kit and curing chemistry gets tweaked. For model kits and the volume I'll likely make it'll be printing all the way.

Just need to get a break from real life to spend some time on these again. Moving house means I cleared out all of my models selling the ones I could and giving my printed ones away to a local mate.
 

lostcosmonauts

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Have had another go at the Miles M.52 to revise the shape, add wheels and bays, flying surfaces etc.

Will try running this on a decent resin printer to see how it comes out
 

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lostcosmonauts

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A couple more tweaks and breaking it into more printable sections to try out in the slicing program. Looking steadily better
 

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lostcosmonauts

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I realise Shapeways is really really expensive so can't imagine that anyone will want to buy from a store but have uploaded my models so you can view them in 3D anyway

 

lostcosmonauts

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Are these re-scalable to 1/48?
Should be pretty straightforward. The underlying model would have the same proportions so it'd just be a case of breaking it up into parts sized and oriented for the printer to cope print at 150% size of the 1/72 version.

I've just ordered a resin printer which should let me make these at high resolution and quality (and hopefully with transparencies if I can get the clear resin printing nicely). Due to moving house it'd be into the New Year before I can realistically offer them but I'm hoping to start up a micro business doing 3D printed kits of these types
 

lostcosmonauts

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I realise Shapeways is really really expensive so can't imagine that anyone will want to buy from a store but have uploaded my models so you can view them in 3D anyway

Very cool! Alas ... when I click on a specific type, I get redirected to a generic page = https://www.shapeways.com/marketplace

Anyone else having this problem?
Should be unlocked now - does this work for you? https://www.shapeways.com/designer/funkyalchemist
 

lostcosmonauts

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A bit of a while since I updated. My workshop is out of action for a little while so I might as well crack on with some digital design. Hoping to have a couple of models to show off soon but next up:
- Blackburn P.139 AEW and COD variants
- Handley Page HP.115 low speed delta research aircraft
- BAC.221

Once I have a workshop functional again I'll have my own resin printer and be able to print off more regularly
 

lostcosmonauts

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Smidge of progress on the P.139 - there were a number of variants and inconsistencies between the drawings so I’m making the best of what I have. Even inside the best of the 3-view layouts the windows don’t translate between plan and side views so this is at best a subjective interpretation

Surface detail, moving parts, internal gubbins and undercrackers to follow
 

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CJGibson

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Drop me a line for P.139.

I think you'll find that all the drawings, especially the originals, have inconsistencies. We concluded that only the component drawings used in manufacturing were 'correct'.

Chris
 

riggerrob

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Smidge of progress on the P.139 - there were a number of variants and inconsistencies between the drawings so I’m making the best of what I have. Even inside the best of the 3-view layouts the windows don’t translate between plan and side views so this is at best a subjective interpretation

Surface detail, moving parts, internal gubbins and undercrackers to follow

P.139 was one of silliest-looking proposals ever ... but it made perfect sense from a radar engineer's perspective.
Hah!
Hah!
 

lostcosmonauts

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Smidge of progress on the P.139 - there were a number of variants and inconsistencies between the drawings so I’m making the best of what I have. Even inside the best of the 3-view layouts the windows don’t translate between plan and side views so this is at best a subjective interpretation

Surface detail, moving parts, internal gubbins and undercrackers to follow

P.139 was one of silliest-looking proposals ever ... but it made perfect sense from a radar engineer's perspective.
Hah!
Hah!
Oh, man. If only that were the worst beating with the ugly stick

Anyway... might look like almost nothing has changed but honestly there’s some progress on the moving surfaces and innards
 

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lostcosmonauts

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I’m puzzling over the wheels of the P.139 and resorting to liquid inspiration (Arran, 10yo) and making something altogether nippier looking to refresh the palate

English Electric P.8
 

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Volkodav

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Are these re-scalable to 1/48?
Zealot!
As I’m thinking of starting up a micro business offering these and more kits I’ll take all the zealots I can get. Might need a different breakdown of parts to fit them in the build volume of the printer but if there’s demand for ‘em I’ll do ‘em
Depending on the level of spousal supervision (rather whether I could get away with ordering it) I would be interested in a Hawker P.1081
 

lostcosmonauts

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Are these re-scalable to 1/48?
Zealot!
As I’m thinking of starting up a micro business offering these and more kits I’ll take all the zealots I can get. Might need a different breakdown of parts to fit them in the build volume of the printer but if there’s demand for ‘em I’ll do ‘em
Depending on the level of spousal supervision (rather whether I could get away with ordering it) I would be interested in a Hawker P.1081
I haven’t costed out yet but as I’m doing speculative types I’m not likely to do decals or fancy boxart leaving the finish to the imagination and ingenuity of the modeller so aiming for pricing pretty unthreatening to domestic harmony. Idea is to print on demand so that I don’t have big outlay on stock (other than resin)

That’s a model I need to return to. I had an abortive attempt at a conversion for a Sea Hawk kit then wrote it off as being harder to mate accurately than it would be to start from scratch
 

lostcosmonauts

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Lots of details still need to be added but steadily coming together
 

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