FT Pietenpol Model A

by SP0NZ, published

FT Pietenpol Model A by SP0NZ Feb 8, 2017
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FT Pietenpol Model A by SP0NZ is licensed under the Creative Commons - Attribution license.

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Thing Statistics

1786Views 369Downloads Found in R/C Vehicles


This model is designed to be a 3D printed accessory for the FT Mini Pietenpol RC foam board airplane designed by Josh Bixler of Flite Test. Josh designed a Model A engine for the Pietenpol using Flite Test foam board. While this works to capture the basic look, Josh was looking for something a little more detailed. This is my first 3D model designed specifically for 3D printing.

*Flite Test logo and Gremlin used with permission from Flite Test, LLC.

Print Settings


Anet A8










This print has only been printed with PLA so far. Print 1 of each piece (block, radiator, and hoses) and glue together with medium CA.

Block: .2 mm layer height, 10% infill, raft, supports

Radiator: print vertical, .2 mm layer height, 10% infill, raft

Hoses: print flat, .2 mm layer height, 50% infill (wanted some extra strength), raft

Assembly: Glue parts together with medium CA and CA kicker.

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Have you thought about making the engine block overhang smaller or closer to a 45 angle to eliminate the need for support? If not, you could separate the top and bottom sections of the engine block. Also, in the interest of support free printing, the exhaust headers could potentially be separated onto a plate you glue to the side so they can be printed in a vertical orientation.

Thanks for the great feedback. All great suggestions. Modeling for 3D printing is a whole new ball game for me. I'm learning as I go. This was a time sensitive project for Josh Bixler at Flite Test so it was a bit of a rush job and also my first 3D printed design. I plan to add even more detail to it in the future and will look at slicing it up into smaller pieces to eliminate the supports.

On a side note, the original version of this model was all one piece. Needless to say it was a pain trying to get a print to work that way. ;)

Printed out perfectly thanks!!

When I try to process the radiator stl it has gaps and will not print correctly. I use simplify3D and this is the first time I have had issues. The models are great keep up the good work!

Can you elaborate on where you are getting gaps? I am using Simplify3D 3.1.1 and have printed this file 3 times with no issues. I am new to 3D printing, so please bare with me as I work out any issues during the learning process.

I just processed it with slic3r and it was fine. I'm using simplify3d 3.1.1 as well. It must be a setting i'm missing. I'm still trying to find what happened.

I posted a pic in 'I Made One'

mesh -> seperate connected surfaces will fix the problem by seperating multiple intersecting shells of one stl to on shell in multiple stl's which print fine