3D Printed Hull

[Antoine FLEURY]

THe IOM Rules 2018 talk about "moulded" plastic, regarding to materials of the hull.
Does 3D printed Hull is convenient with the rules ?

[YNESTA Joseph]

RC D.2.1 (a) (8) D 2.4 (a)

The new building materials have arrived for a long time and leave a doubt about their uses.
In construction 3D printer several product are offered:
the meal
The ABS
Polyamide powder
Alumide powder
Liquid resin
Wax
Metallic powders
Titanium
AluminumPrecious metals
or are the rules cited above for the use of these new materials, which are allowed ??

Thank you

Joseph YNESTA (technical director of IOM France)

Thank you to provide an answer otherwise I ask myself the question of what is the purpose of this forum which many topics have no answers;

[YNESTA Joseph]

RC D.2.1 (a) (8) D 2.4 (a)

The new building materials have arrived for a long time and leave a doubt about their uses.
In construction 3D printer several product are offered:
the meal
The ABS
Polyamide powder
Alumide powder
Liquid resin
Wax
Metallic powders
Titanium
AluminumPrecious metals
or are the rules cited above for the use of these new materials, which are allowed ??

Thank you

Joseph YNESTA (technical director of IOM France)

Thank you to provide an answer otherwise I ask myself the question of what is the purpose of this forum which many topics have no answers;

I forgot to mention that in questions and answers, we only talk about authorized pellets and nothing about the threads for 3D printers

[Hiljoball]

Hello Joseph.

You raise some good questions, but this forum is not an official channel for getting the correct and binding answers.

The correct process is for the Class Secretary of IOM-France to send your question to the IOMICA Technical Committee for an interpretation.

John

[YNESTA Joseph]

Thank you for your answer, I act differently.

[SEBASTIEN LEFEBVRE]

Hi,
I am a french IOM sailor. I have been 3D printing a boat approximatly 1 year ago. But I face problems when trying to get a class certificate from french Organisation. They doesn't want to deliver this certificate while they don't have a confirmation from IOMICA on the possibility to use 3d printer and thermoplastic for an IOM boat. Today they still don't get any answer from you.
On my side I am convince that my boat is compliant with the classe rules beacause the hull is is construct with PLA which is the most common thermoplastic used in 3d printing. In does no include any additional materials like carbone or fiber. So it is compliant with D2.1 (8) :

"(8) Thermoplastic, which may be moulded, containing only permitted materials."

Concerning the use of a 3d printer, it should be ok thanks to rule D2.3 :
D.2.3 CONSTRUCTION TECHNIQUES Construction techniques for forming a hull are unrestricted subject to compliance with D.2.1.

At present time we are in a deadlocked situation in which french guy can not use 3d printed boat but in many other countries (austrialia, US, Germany...) they could get certificated without any issue. We face an "non-Equity" situation.

Please could you take the problem in charge by answering official request from french IOM governance as soon as possible.

Thanks for your read,
Regards.
Sébastien Lefebvre

P:S : I appologize for my bad english.

[Hiljoball]

Hi Sebastian,

There is an item on the IOMICA Rules section about 3d Hulls

http://www.iomclass.org/iom-questions-and-answers-qa-2/

and scroll to Thermoplastics.

As I understand it, there is a discussion going on about additives in the pellets that may not be in the list of approved materials. This may be the cause for your measurers holding back approval

John

[YNESTA Joseph]

Indeed section D2.1.8 speaks of thermoplastics but "" in granulate "" and not "" in wire "", then says "" molded "", which in French means use of a physical mold outside the 3D works with a virtual mold.


Translated with google

[antoine BIDAUD]

hI

have you got more information about this?

[YNESTA Joseph]

a request was made on 20/2/2019, a revival too but it seems that they are very busy and as COVID has been there ..........