> [...] is a significant limiting factor for the structural integrity of 3d printed parts
I went and checked. There is a youtube called MyTechFun[0] who does proper material testing, and being a patreon I have access to the entire table of his results. The comparison I made is tensile strength vs layer adhesion, which is the same test (basically pull until it breaks), but the sample is printed lying down or standing up. I expressed layer adhesion as a percentage of tensile strength, and sorted by this.
The best three I will show here (tensile and adhesion are in kg):
While the tensile strength is higher for all (except one), it does not seem to be quite as limiting a factor as your claim makes it out to be. We can find percentages of >70% for all major filament types. But to be fair, most of them seem to cluster around 40-50%. While this is not great, given the choice of materials I think it can be worked around quite easily.
> [...] is a significant limiting factor for the structural integrity of 3d printed parts
I went and checked. There is a youtube called MyTechFun[0] who does proper material testing, and being a patreon I have access to the entire table of his results. The comparison I made is tensile strength vs layer adhesion, which is the same test (basically pull until it breaks), but the sample is printed lying down or standing up. I expressed layer adhesion as a percentage of tensile strength, and sorted by this.
The best three I will show here (tensile and adhesion are in kg):
While the tensile strength is higher for all (except one), it does not seem to be quite as limiting a factor as your claim makes it out to be. We can find percentages of >70% for all major filament types. But to be fair, most of them seem to cluster around 40-50%. While this is not great, given the choice of materials I think it can be worked around quite easily.[0] https://www.youtube.com/@MyTechFun/videos
[1] https://youtu.be/Q6v4xYrkOnU
[2] https://youtu.be/2dgzwCvSO2k
[3] https://youtu.be/cQb-hbr1KYY