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#1 WigWag Workshop

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Posted 09 July 2016 - 04:16 PM

Good Day!

 

I am new here, so sorry if this has been discussed before.  I seen some threads on folks making resin bodies, but has anyone heard of someone using a 3D Printer to make bodies? I think PVA plastic would be a lot lighter than resin, and depending on the printer, the detail would be a better quality. 

 

-Steven


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#2 Bill from NH

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Posted 09 July 2016 - 07:34 PM

Steven, some of the 1/32 guys on the SCI & HRW boards have made bodies & chassis with 3D printers.


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#3 munter

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Posted 09 July 2016 - 11:56 PM

Hello Steven

 

I think PVA plastic would be a lot lighter than resin, and depending on the printer, the detail would be a better quality. 

 

Being what I call a resin head I can say that the detail possible with resin is only limited by the master maker and casters ability and desire.

Silicone and resin can capture and reproduce very fine detail. The weight and thickness of some resins is another point where the caster has control and can make a light weight or a heavy weight.

 

3D printing can produce a nice lightweight body with excellent detail and strength but as yet the finish is still debatable. 

 

I have recently taken delivery of a printed 53 Studebaker Commander...surface needs smoothing but detail is excellent. I will use it as a master for a mould so I can cast more in resin.

 

Cost and time to print a body versus cost and time to cast a resin body would be another comparison I would like to know more about.

 

I say this from the experience of moulding 35 plus 1/32 masters and casting approximately 500 bodies.

 

Oh and the Studebaker is 1/32 scale.


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#4 Ramcatlarry

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Posted 10 July 2016 - 12:45 PM

3-D is also an excellent way to make a  base mold master for a harder, heat resistant alumilite mold for vacumn forming with all scales.  Once the SHAPE is right, it is easier to adjust the program to make the different, accurate scale masters.


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#5 Dennis David

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Posted 10 July 2016 - 05:33 PM

I've see a lot more 3D chassis than bodies being made, especially chassis that use slot.it motor pods.

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#6 Mach9

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Posted 10 July 2016 - 07:51 PM

3-D is also an excellent way to make a  base mold master for a harder, heat resistant alumilite mold for vacumn forming with all scales.  Once the SHAPE is right, it is easier to adjust the program to make the different, accurate scale masters.


Larry, would you be willing to comment on the steps one would take to get to the Alumilite stage? I'm assuming it would all start with a 3D drawing of the body in question.

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#7 Ramcatlarry

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Posted 11 July 2016 - 10:55 PM

Same as it has been done since the carved balsa 1950's.....backpour rubber molds.   Vac form masters need to be hollow and have very small 'suck' holes to help draw the warm sheets into the detail.  All withstanding the lexan forming temperatures, which are likely higher than the 3D plastic temps.


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Larry D. Kelley, MA
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