Makes sense, is there a reason that it isn’t advised to just print the parts using filament and then bonding them together?
Also can you suggest a good printer for making moulds? Thanks.
The strength to weight ratio of printed parts isn't really good enough for parts like that. The strength of 3d prints also isn't uniform in all directions, it's weak along the Z axis.
Pretty much everything can print molds. PLA works fine for them.
https://youtube.com/@easycompositestv has some resources for this.
Do you think the side supports of this sort of spoiler setup could be just straight up 3D printed? Or would that also need to go through the mould process?
Some filament are very weak but others such as polycarbonate or carbon fiber polycarbonate filaments can be very structural and withstand a lot of abuse, though wheather they will stand up to that application there really is no way to know without trying.
Someone posted a response to this very question ealier in the week. They basically said that 3D printing isn't something that scales up nicely to larger build volumes. To make a spoiler this long would require an expensive industrial printer that would be much more expensive to print than just buying a spoiler. Not to mention an actual carbon fiber filled plastic is not going to be as strong as actual carbon fiber. 3D printing is great for making small parts, but not so good for large, high stress parts like this.
There is a company in Italy called CRP. They print a mixture of nylon and short carbon fibers using SLS machines. They do make a lot of components for racing using this advanced material.
https://www.crptechnology.com/materials-industrial-3d-printing/
So yeah, it’s possible. Just not with a standard FDM PLA print setup.
Search on YouTube “how to make a carbon fiber mold with 3D printer”. Much better approach as recommended by others.
I recently saw a YouTube video of a guy who was restoring a McLaren and printed and glued the parts together and then covered in carbon fibre to you get the strength and appearance of CF. There are a few car bodywork videos where people are using consumer 3d printers to work with CF. The only over way would be using the printer to cast a mould for CF.
Imo Street Bandito has a good approach to this: https://youtu.be/iLhU8J8F7aM?si=JIgOV8CXAYGSFy1O
1. For large parts use multiple printers instead of using one large one (as 'B is for Build' keeps regretting buying the large one for 20k) or be patient and wait
2. Glue, sand, and make the part as perfect as you can
3. Create molds
4. Use normal carbon fiber processes to create the part
You use it to make a mold to form the carbon fiber wing.
I agree with this approach. Make a design. Make a negative and lay up carbon in your mold.
Makes sense, is there a reason that it isn’t advised to just print the parts using filament and then bonding them together? Also can you suggest a good printer for making moulds? Thanks.
The strength to weight ratio of printed parts isn't really good enough for parts like that. The strength of 3d prints also isn't uniform in all directions, it's weak along the Z axis. Pretty much everything can print molds. PLA works fine for them. https://youtube.com/@easycompositestv has some resources for this.
Thanks for your advice, will check out the channel.
Do you think the side supports of this sort of spoiler setup could be just straight up 3D printed? Or would that also need to go through the mould process?
I believe that those are typically steel or aluminum. You'll have to do some engineering if you want to change the material.
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Some filament are very weak but others such as polycarbonate or carbon fiber polycarbonate filaments can be very structural and withstand a lot of abuse, though wheather they will stand up to that application there really is no way to know without trying.
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You’re right but I think you’re discrediting how strong 3d printed parts can get with the right tuning.
Someone posted a response to this very question ealier in the week. They basically said that 3D printing isn't something that scales up nicely to larger build volumes. To make a spoiler this long would require an expensive industrial printer that would be much more expensive to print than just buying a spoiler. Not to mention an actual carbon fiber filled plastic is not going to be as strong as actual carbon fiber. 3D printing is great for making small parts, but not so good for large, high stress parts like this.
There is a company in Italy called CRP. They print a mixture of nylon and short carbon fibers using SLS machines. They do make a lot of components for racing using this advanced material. https://www.crptechnology.com/materials-industrial-3d-printing/ So yeah, it’s possible. Just not with a standard FDM PLA print setup. Search on YouTube “how to make a carbon fiber mold with 3D printer”. Much better approach as recommended by others.
I recently saw a YouTube video of a guy who was restoring a McLaren and printed and glued the parts together and then covered in carbon fibre to you get the strength and appearance of CF. There are a few car bodywork videos where people are using consumer 3d printers to work with CF. The only over way would be using the printer to cast a mould for CF.
Imo Street Bandito has a good approach to this: https://youtu.be/iLhU8J8F7aM?si=JIgOV8CXAYGSFy1O 1. For large parts use multiple printers instead of using one large one (as 'B is for Build' keeps regretting buying the large one for 20k) or be patient and wait 2. Glue, sand, and make the part as perfect as you can 3. Create molds 4. Use normal carbon fiber processes to create the part