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Ariel Atom 3D print


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#141 NormL

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Posted 06 October 2013 - 09:27 AM

Thanks for the kind words

 

I knew a compromise might be coming and it is here.  This is the smallest I feel that I can get a ball joint for the suspension arms.

 

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This is way blown up and it is not as bad as the blown up picture makes it look.  The ball on the end of the arm is 1.5 mm in diameter.  I know that when it is printed that the points on the "cup" will melt back as they cannot exist that thin, so, I am making an educated guess on how much cup will be left to snap into.  Another choice would be to model something that looks a little closer to the actual joint and make it a glue in peg.  That is not going to look that good either as I will be compromised by the minimum printing width surrounding the mounting hole.  I am leaning towards the ball joint as it is really only 1 mm total in width bigger and the same in the other two dimensions.  There are limitations on how small I can go with non NASA printers.  There is always printing everything in the right spot without gaps for movement, I guess.  I could make the joints look great in that case.  Printed "enblock" will make it very hard to paint, but, the most accurate.  So that is the decision, suspension accurate and all at once or snap in and blob joints ...  When I put it that way, I guess enblock is the answer.



#142 Bigjeff

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Posted 06 October 2013 - 09:29 AM

I like that! 

Here,s another i've ssen on another forum, not functionnal but still pretty cool!

 

http://www.scalemode...pic,9523.0.html



#143 NormL

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Posted 06 October 2013 - 09:54 AM

WOW, that is big!  Sooo cool



#144 NormL

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Posted 06 October 2013 - 11:15 AM

If I wasn't convinced before I am now.  The bracket cannot match stock as it would print too thin, so, this is a version of it that can print.  The stock arm does have knobs on the end and the metal it bolts too is very thin.

 

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#145 NormL

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Posted 10 October 2013 - 04:47 PM

I received my 1/6th scale Christmas ornaments I am doing of some surveying instruments.  As content they have no reflection on the Atom model, but, as an exercise in printing separate and functional they do.  I am designing the Atom to be printed as sinter or deposit and using the combine design standards.  I am doing this for two reasons, cost and detail.  Sinter is way cheaper and does not have the detail of deposit.  The laser sinter does not really lose that much detail. The cost difference will be quite large for something on the scale of an entire kit.  They will still be separate models as the flexibility of the sinter lets you snap together parts that just are not possible with deposit.

 

These are sinter versions of the models shown in deposit above.  I made them snap together mini kits.  I already snapped the bottom on the T3 before I remembered that I am dying these, but, it is almost all green anyway.  The one side, visible in the photos, of the scope portion of the Geodimeter does have print stepping on it. That is caused by the orientation when printing. It is the only faces to show it as the other side is fine.

 

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These are the dyed versions and they are so awesome! I dyed them last night, which is right at the limit of my artistic abilities. I managed to smudge black dye on the eye piece of the Geodimeter, which means that I will probably re-boil the color off and do it again soon.

 

One thing though, ... I created a green Christmas ornament. Yeah, a green Christmas ornament. What was I thinking? The bases and scopes turn as designed and the side knobs on the Geod work great. Very happy with them, I just need to place some advertising on them and give them out to clients.  It occurs to me that I could very easily print these with open scopes and holes in the bottom for a Christmas bulb. Yeah, that is going too far ...

 

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It is not up to the painting standards I have seen on this site, but, neither am I



#146 1930fordpickup

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Posted 24 October 2013 - 03:01 PM

These latest parts are fantastic. Much better than others I have held and looked at.you are doing a fine job on these.

The texture is the only thing holding this back for mass production for most things. The cost will come down with more time .



#147 NormL

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Posted 08 November 2013 - 06:21 AM

Thank you for your kind comments.  You are 100% on the texture issue.  I will release this as a combination detail and sinter plastic model because of this issue.  I am planning on the hood, cowl and deck lids all being detail and the frame and suspension being sinter.  It will be a while before I cut it into trees and make printable blobs.  Since so many parts will look alike I feel I will have to place each corner on its own tree anyway.  Model builders that actually build one can tell me if I was right on my choices.  The design standards are so close for the two, I am doing a worst case design that way every item will be available in both plastics.  My personal desk version will be 100% sinter as stuff will fall on it and customers will play with it, so, I just want strength.  A desk is a very dangerous place for a model.

 

I knew if I let this sit for a while I could think of a way out of my self made suspension issue.  I think I have it and am going to dive back in.  I have been asked for the model to do CFD analysis for some up coming after market wings.  In order to use my model for this I need to finish the 1/24th scale to have all of the car parts.  Cool stuff.  I so want to do full scale side pods, more like Indy than F1, soon.

 

I have now printed two metal objects to get my feet wet.  I did a stainless steel key fob that is nothing more than a 3mm raise of a 2D logo with filleted edges.  Regardless of the simple design the product is fantastic.  The sharp edges are truly sharp and the round edges are truly round with no evidence of stepping.  This is also true of the gold plated brass that I printed for my wife.  It was also a simple design printed right to the minimums.  Both came out great.  The stainless print is heavily pitted as expected though

 

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#148 NormL

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Posted 23 April 2014 - 12:54 PM

I know I am very tardy with any updates on the Atom model, but, in the interim I want to share some pictures fro the SurveyorConnect website.  Nate Drummond did an awesome job painting the laser sintered plastic (these are not the detail plastic ones) surveying instruments  The large one is 1/4th scale and the small ones are 1/6th scale.  http://surveyorconne...hread&id=256600

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