If you have distorted, a see-through-effect or just a strange view behaviour of your mesh in substance painter you should check your polygon-normals. They can cause an error if their direction is reverse. Painting should also be producing only errors, also with a correct uv-layout.
I have never used before a railspline in a sweep-object … so here is how it works. This is a sweep object with a regular profile-spline and a spline for the extrusion and its deformed because the profile rectangle is trying to get along with the b-spline and it looks kind of messy . thats…
I have no idea why or any better solution until now, but if you are experiencing that your materials are only white in the octane liveviewer you can try to change the projection-style of your material from (standard) uvw-mapping to spherical mapping (or any other type) in the c4d attribute window. Looks like this is…
Under the Layout-field you find the Texcel-Density of your islands. Pick the island, press pick, get the number. Open another asset, pick your island/s and enter the same number. press set. Now you have the same Texcel-Density over your different assets. Awesome tool !
Instead of trying to model the knots yourself
Beispiel-Szenario: Mehrere 3D-Objekte mit mehreren gleichen Materialien aus verschiedenen Szenen in eine zusammenkopiert. Viele Material-Duplikate die alle zugewiesen sind. Wie löst man das? https://github.com/aturtur/cinema4d-scripts/blob/master/AR_Scripts_1.71/Materials/AR_MatMerge.py funktioniert auch mit Polygon-Selektionen. by https://aturtur.com/