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Posted
On 8/17/2023 at 7:36 AM, JayW said:

I too am trying to decide how to 3D print an entire model (probably a Mustang), only in 1/18.  Your Dornier might be just about as large as that!  Good luck and we should compare notes!  Especially on the transparencies.

 

Just curious, are CAD images infinitely scalable like vecor images ?

Posted (edited)

Hi Mike all cad drawing and models are scalable you can draw a plane in 1:1 scale and then scale it down but you can also print it in 2:1 scale if you have a big enough printer. The difference between the models is the quality and quantity of detail, the more you reduce the scale, even a fully detailed 3D model will lose definition of the details based on the minimum resolution of the printer. A 2k  printer will had less definition than a 4k which obviously is less  than an 8k or 12k (pixels x square inches).

As far as the images are concerned, no, that depends on the definition with which you render them, so the more you enlarge, the more grainy the image

Edited by spartacus2000
Posted
On 8/20/2023 at 10:39 PM, brahman104 said:

Love this!!!! I guess the big questions is will it be skinned in aluminium? ;) 

 

Craig

 Nah, not the big question at all. Knowing Peter (not personally, but still ... ) it will of course be skinned in aluminium :coolio:

 

Cheers

Rainer

Posted

Ha! thanks guys :)

 

On 8/20/2023 at 9:39 PM, brahman104 said:

Love this!!!! I guess the big questions is will it be skinned in aluminium? ;) 

 

Craig

 

 

No, it won't be skinned, it may not even be built other than a test case. Really the objective is to see if 1. it can be done and 2 that I can do it. As I say it is a long term thing I will do in gaps in product design, and in fact I have done nothing since as I am deep in the next airscale Pro set

 

Got the 1/72 kit now and some great plans so will be back at it soon

 

Peter

Posted
On 8/17/2023 at 3:36 PM, JayW said:

Hi Peter - yes that was fast.  The props look really good, and I am pretty sure i know how you did them.  ;)

 

The nacelles look great.  And it appears you were able to minimize control points.  I just finished episode eight of the 14-episode "Primary Surfacing" class (can be found on YouTube), where I believe I am learning some critical tips on how to surface and not get yourself into trouble (which I have done many times).    It is taught in Rhino by a guy whose voice I am very tired of, but I will persist.  Fairly soon I will test it out on the P-51 smiley face nose intake - if I can do that I can do anything (surfacing anyway).   

 

I too am trying to decide how to 3D print an entire model (probably a Mustang), only in 1/18.  Your Dornier might be just about as large as that!  Good luck and we should compare notes!  Especially on the transparencies.

 

I know the guy you speaak of Jay and yes, he is hard to listen to 'raaaaiiiiiight'..

 

I in no way work in as disciplined, learned way as you do - i just bastardise shapes until the look like I want, but I do enjoy the prospect of learning

 

good luck with the '51 and hopefully we will hear about it soon :)

 

Peter

Posted
On 8/20/2023 at 2:18 AM, spartacus2000 said:

Hi Mike all cad drawing and models are scalable you can draw a plane in 1:1 scale and then scale it down but you can also print it in 2:1 scale if you have a big enough printer. The difference between the models is the quality and quantity of detail, the more you reduce the scale, even a fully detailed 3D model will lose definition of the details based on the minimum resolution of the printer. A 2k  printer will had less definition than a 4k which obviously is less  than an 8k or 12k (pixels x square inches).

As far as the images are concerned, no, that depends on the definition with which you render them, so the more you enlarge, the more grainy the image

 

Thanks Marco, so while the quality of vector images isn't affected by dots per inch, 3d prints are affected by the resolution of the machine

but not the quality (DPI) of the CAD image.  ?

Posted (edited)

Mike,

 

CAD is not image based. The CAD model can be scaled. The model is then exported in an STL file which is still a model format. For printing, the model is imported into a SLICING program which is informed about what printer is being used, and the different layer images are generated. If the part is too small for the resolution of the printer, detail can be lost. I guess it's possible to create the original model at too large a size so that when it is reduced for export, detail can be lost too.

Edited by denders
  • 1 month later...
  • 2 years later...
Posted

well....

 

it seems this was destined to be..

 

when I started this post, the Do17 was a bit of an experiment for me - now, given I have nearly 2 kits under my belt and this is next, it's time to reawaken it :)

 

Ilk7ko.jpg

 

 

I have done quite a lot - the fairings around the wing to fuselage took me 3 weeks alone as they are so complex - they are not finished yet either, so you will have to wait for the body shots :)

 

I got so pi$$ed off doing complex surfaces, I moved onto something easier - the engines..

 

The central core is one part with the leads in place, the rest multiple components.. I liked doing it so much I made a stand for it to show at Telford - I hope to have more parts by then...

 

here is where it's at..

 

qc2OPk.jpg

 

5trhDj.jpg

 

nttcwR.jpg

 

tXAj0c.jpg

 

xLZTjI.jpg

 

IYMWHr.jpg

 

y3V45D.jpg

 

MY2qdD.jpg

 

..currently working on the twin fins & rudders..

 

MxFCwi.jpg

 

more when there is more & hope to see you at Telford

 

Speaking of which, if anyone in the UK fancies making a painted version of the engine stuff for display on my stand at the show please let me know by PM - I will need it first thing Saturday morning - you can keep it afterwards :)

 

TTFN
Peter

Posted
16 minutes ago, airscale said:

well....

 

it seems this was destined to be..

 

when I started this post, the Do17 was a bit of an experiment for me - now, given I have nearly 2 kits under my belt and this is next, it's time to reawaken it :)

 

Ilk7ko.jpg

 

 

I have done quite a lot - the fairings around the wing to fuselage took me 3 weeks alone as they are so complex - they are not finished yet either, so you will have to wait for the body shots :)

 

I got so pi$$ed off doing complex surfaces, I moved onto something easier - the engines..

 

The central core is one part with the leads in place, the rest multiple components.. I liked doing it so much I made a stand for it to show at Telford - I hope to have more parts by then...

 

here is where it's at..

 

qc2OPk.jpg

 

5trhDj.jpg

 

nttcwR.jpg

 

tXAj0c.jpg

 

xLZTjI.jpg

 

IYMWHr.jpg

 

y3V45D.jpg

 

MY2qdD.jpg

 

..currently working on the twin fins & rudders..

 

MxFCwi.jpg

 

more when there is more & hope to see you at Telford

 

Speaking of which, if anyone in the UK fancies making a painted version of the engine stuff for display on my stand at the show please let me know by PM - I will need it first thing Saturday morning - you can keep it afterwards :)

 

TTFN
Peter

 

What? This Saturday? :o

 

Just joking, I know you mean the 8th of November :D

 

Your engine and panels is truly astonishing Peter. 

Great job once again. 

 

Can't wait to see it at Telford.

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