Filament that is not dissolvable in brake fluid
Filament that is not dissolvable in brake fluid
Hello everyone 
I was working on a crazy funnel which can be attached to the brake fluid reservoir of my car, thus increasing the volume of the reservoir which could help a lot when bleeding the brake system as it is not necessary to constantly monitor the brake fluid level while pumping fluid out of the system.
The design currently looks like this:

However, I never got to use it because after putting some test parts in a small container with old brake fluid, I noticed that the brake fluid gets colored. I have been using PLA because such a thin walled object won't be easy to print in ABS.
So while PLA itself doesn't dissolve in brake fluid, the coloring of the filament seems to react with the fluid. So it is not a good funnel like this. I don't know if the coloring would influence the brake fluid quality but I wouldn't like to test it
Could anyone suggest a better alternative that could be used?
P.S.: I already finished the brake job the old-fashioned way without the funnel but am still curious if there is a filament that does not react with brake fluid.
I was working on a crazy funnel which can be attached to the brake fluid reservoir of my car, thus increasing the volume of the reservoir which could help a lot when bleeding the brake system as it is not necessary to constantly monitor the brake fluid level while pumping fluid out of the system.
The design currently looks like this:

However, I never got to use it because after putting some test parts in a small container with old brake fluid, I noticed that the brake fluid gets colored. I have been using PLA because such a thin walled object won't be easy to print in ABS.
So while PLA itself doesn't dissolve in brake fluid, the coloring of the filament seems to react with the fluid. So it is not a good funnel like this. I don't know if the coloring would influence the brake fluid quality but I wouldn't like to test it
Could anyone suggest a better alternative that could be used?
P.S.: I already finished the brake job the old-fashioned way without the funnel but am still curious if there is a filament that does not react with brake fluid.
Re: Filament that is not dissolvable in brake fluid
use the type that's written on the tank your filling
pet filament is an option because brake fluid is caustic and pet is resiliant.. would first do a test do..
pet filament is an option because brake fluid is caustic and pet is resiliant.. would first do a test do..
- PartTimeRonin
- Posts: 83
- Joined: Mon May 22, 2017 2:33 pm
Re: Filament that is not dissolvable in brake fluid
Nylon should be fine i think, brake fluid seem to be glycol ether or mineral oil based so it should work.
Also try to buy natural color, less addictive to worry about.
Also try to buy natural color, less addictive to worry about.
Re: Filament that is not dissolvable in brake fluid
At least on 2 of my mopeds the brake fluid container is original made out of nylon.
As I'm going to use my Printer for some parts for motorcycle repair and restoration I'll do some resistance test with different materials and liquids.
Theory is sometimes different. Like PLA should be resistant to Acetone but as Thomas showed and I tested it too you can bond PLA parts with Acetone
Regards Richard
As I'm going to use my Printer for some parts for motorcycle repair and restoration I'll do some resistance test with different materials and liquids.
Theory is sometimes different. Like PLA should be resistant to Acetone but as Thomas showed and I tested it too you can bond PLA parts with Acetone
Regards Richard
Opa's bester Rat: Probieren geht über Studieren, Grandpas best advice: the proof of the pudding is in the eating
Re: Filament that is not dissolvable in brake fluid
Sorry it took me forever to write back.
Nylon would be my first choice, I'm not happy with the price though.
Maybe I should try PET first. It is cheaper and... I know from experience that braking fluid doesn't eat plastic bottles (like mineral water, coca-cola, etc.) which are generally made of PET... So this would be my first try
Nylon would be my first choice, I'm not happy with the price though.
Maybe I should try PET first. It is cheaper and... I know from experience that braking fluid doesn't eat plastic bottles (like mineral water, coca-cola, etc.) which are generally made of PET... So this would be my first try
Re: Filament that is not dissolvable in brake fluid
Your right I store mostly all of my mineral and syntetic oils in PET Bottles.
Opa's bester Rat: Probieren geht über Studieren, Grandpas best advice: the proof of the pudding is in the eating
- RickFisher
- Posts: 1
- Joined: Mon Jul 10, 2017 4:13 pm
Re: Filament that is not dissolvable in brake fluid
A funnel like that it's necessary on modern radiators to completely bleed the air out of the system. Check some YouTube videos to see what I mean.
So the answer here is petg for a cheap solution but nylonx or nylon for best solution?
So the answer here is petg for a cheap solution but nylonx or nylon for best solution?
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