3D printing, how do you do it?


#103

Hi @Flo, just wondering what brand lacquer you used? Did you just spray it straight on to sanded PLA? Cheers


#104

As Laquer I used „Cramolin Urethan klar“ which is just urethan laquer. The other one is an off-brand low cost Alkyd laquer. I just sprayed the inside of my housing twice with a thick coat and did let it dry for days. That got it leakproof as far as I can tell. My standard PLA print soaked the laquer almost like a sponge. I did not sand much, only wiped my print with denatured alcahol. Maybe I degreased it with acetone, but I don‘t remember exactly as I opimised my print settngs instead.

I do however recommmend to tune your printing parameters first. Look in my old post. Use many perimeter lines (>=4) and maybe some overextrusion and a higher printing temp. You can use pressurized air to check for leaks. Usual prints for me leaked like a sieve. With optimized settings it should hold air well. You can use laquer aferwards to bulletproof it.


Timing Belt Reduction
#105

Also use small layer heights. 0.1mm is much more compact than 0.2mm.


#106

Great, thanks for that. I have printed my parts that need to be watertight with 5 perimeters, 10 top and bottom layers 210deg on the nozzle and 0.98 extrusion factor with PLA, haven’t done a proper air test yet but so far it looks like they are going to be waterproof. Just wanted to add lacquer as a bit of extra security and maybe give a bit of a coat on the outside to stop scuff marks and the PLA getting dirty. Cheers


#107

Hi has any one tried Appolo X
ApolloX™ is a professional high strength & performance engineering filament based on a uniquely industrial-grade modified ASA (Acrylonitrile Styrene Acrylate) compound. ApolloX™ has been modified to have great thermal stability & improved filament flow behavior and has zero-warping and flawless first- and interlayer adhesion allowing you to 3D print objects with an almost injection molding precision.

ApolloX™ is UV & weather resistant ensuring great color stability – combined with high strength and heat resistant properties – which makes ApolloX™ a perfect engineering filament for outdoor and automotive applications.


#108

A post was merged into an existing topic: Fusion 360 help thread


#109

Never tried that brand of ASA but any good ASA based filament will offer the same. You can’t get even near the quality and mechanical specs than the crappiest injection molded part, using 3D print, but hey, that’s what we have available and for the most of our necessity… it’s enougt! When you want more strenght, composites (laminated on top or full body inside a 3d printed mold) could give you better results. At cost of hours of (dirt) labor!


#110

We used a MarkForged printer for our waterproof remote, holy cow, those print beautifully! You cant tell which side is the good side or the bad… They did use some high-end machine and the material is super strong, and was $100 in material alone, but very very nice!

Nick, were in Canada are you? I’m a Canuck! Spring is ALMOST HERE!


#111

Late reply…sorry,

I am in Qc city… and follow your work on your YouTube Channel… and also a Contributor to your project. I am building my own version of it… but needed to pause it since Im mooving in a couple of week. Hopefully, we could meet somewhere on the Ontario Lake!

Cheers!
Nick


#112

Awesome!
I’m 1.5 hours north of Toronto on Georgian Bay. It would be great to ride with you!


#113

Anyone looking to try NylonX filament? I just bought roll and the hardend nozzle from company - see link below. I opened it yesterday, used a little for two small parts and its not the type of material I need right now. Its back in a filament dry box and mint condition. It was total $100 for roll, hardened steel nozzle and shipping but ill send to out for $69 USD shipping included.

https://www.matterhackers.com/store/3d-printer-filament/nylonx-carbon-fiber-nylon-filament-1.75mm?gclid=CjwKCAjwkYDbBRB6EiwAR0T_-gQ5zFCMeY-oVrIHWTcVEfrzAZrCBAlzRCYQRop4eyP6boqF0brxahoCkuwQAvD_BwE
nylonx


#114

The petg I use is only 15 per cent more expensive than PLA.

It is more sticky layer by layer, and slightly more flexible. It is resisting to salted water and chemichals.

BUT you need a higher printing temp, and a much higher table temp ( 85 degrees in my case)

Now I only print for myself in petg, bit I print in PLA for my friends.

PLA is a much easier material to start with, pretty straight forward, with low temp requirements. Some PLA prints below 200 degrees with no table temp settings.

For anything in salted water and with someome already having a good printing experience, I would go for petg.

I find the efoil to be a somehow expensive hobby, so the price difference between place and petg should not be a big deal.


#115

Hey Guys this is an awesome 3D printing visual resource to fix the issues you are having. I use this software and its wicked.

Now that I’m working with some extra strong materials I’m into tweaking. It really is incredible how some brands of PLA are JUNK and others print so perfect and rock solid.

Best brand thus far, but testing a new APLA (Pro PLA) that is 4x stronger for our VeFoil mast clamps, ill keep you posted!

Have print issues? This will help you greatly: https://www.simplify3d.com/support/print-quality-troubleshooting/
3dhelp


#116

I see many of you printing structural and sealing parts in PLA, agreed that it’s a great material, also with a nice rigidity and strong bond interlayers, but, at least on ky experience, is father brittle, watertightness could be an issue and worst of all, it deform at “trunk of the car” temperature in summer!
Very good for prototypes but final shot better be in ASA or PC
PETG slightly better but not rigid, not suitable for props, eg. Further than this it doesn’t stick to epoxy and many of the sealants.


#117

for anybody how don’t understand all abbreviations (ASA,PC, PETG) i found this link very good


#118

Agreed, we machined all parts for waterproof areas and the motor mount in aluminum with double o-rings. 3D parts leak.

Our direct jet drive system attaches to the mast, and also lays along the fuselage as we don’t have a prop duct so it can be attached down to the fuselage so its very supported and provides nearly 100% of mast height to fly, only lose 2.5" vs prop with duct and you lose 6-8", because of this Pro-PLA (APLA) is more than stong enough for our design, but obviously something more weather resistance will be used down the road.


#119

Just found this neat resource about 3d printed threads:

I agree with @VeFoil about water-tight 3D prints being a PITA. I do think it is possible, we just need to learn the right interplay between the prints and o-ring and good pressure.