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Thanks for your reaction. My method has evolved the last 4 years, but in this video I use 2 meshes and flow the subD last from one mesh to the other, using the MeshCageMorph Grasshopper component (By Daniel Piker) The reference mesh and basic SubD last are hidden, the target mesh is used as a cage. You can also cage-edit this target mesh, and have 2 levels of "cages". I hope this helps you to figure it out. Crucial is the use of the MeshCageMorph component.

Yes, but keep an eye on the perspective/scale. You will need an app for that. 2D scanner is easier for me

Because in orthopaedic shoemaking the posture of the foot is crucial. Heel lift, pro/supination, toe-off etc. is not under control while scanning the foot directly. The worst thing you can do is placing the foot on a flat surface while scanning and loose all the important curvature of the foot. Sadly this happens a lot...

@@podotools thank you very much for reply

You need the morph component from the fattener plugin for Grasshopper. Then you can make 2 meshes and morph the last from a reference mesh to the target mesh. This target mesh then works as a cage.

I want to learn how Grasshopper creates video-controlled cages ?@@podotools

@@podotoolswould be possible to get a tutorial on how to do that?

I cast the feet and scan the plaster positive.

Maybe... I do have a large collection of these lasts built over the years. Maybe I can train a system to imitate what I do, but I do not know myself what goes on in my mind when modeling. The personal contact with the client definitely plays a big role.

@@podotools That makes sense. How much do you think a good fit is subjective?

@TheGiduch No, I do not make patterns in my daily work anymore, but I know that some people do use Rhino for patterns. There are also plugins for 2dpattern design in Rhino. But also without special plugin Rhino is very usable for patterns. Only the 3D to 2D translation is a problem, Squish is not good enough to flatten orthopaedic lasts. So in the rare occasion that I do draw a upper in Rhino, I do the flattening by hand and scan the 2D result. But maybe a good flattening method becomes available in the future.

In Rhino you can use the command DimCurveLenght to measure and display the lenght of an intersection. With history enabled it updates automatically. Not with meshes, only with nurbs or SubD. Project on mesh is history enabled, for meshes you can use that.

OMG, thank you@@podotoolsthats so helpful<3

@@podotools Ufff, I've justed finished modeling my first Subd shoe last , your videos really inspired me to get into 3d modeling :) Would you mind sparing 3 minutes on taking a look at it and perhaps pointing out some mistakes that I've made, before I send it to milling machine? I could e-mail it to you

@@TheGiduch Send it to podotools@gmail.com and I will have a look at it

Send the link😁

That is not a plug in, but a simpel Grasshopper definition I made that measures the lenght of the intersection with a manually oriented plane.

Scaling is possible, no limitations in Rhino for that. But there is no standard grading rule. Wich grading rules do you have in mind?

@@podotools I would like to grade my shoe sole designs for manufactering in different sizes

@@shvmeertins8437 Do you have the grading rules of the lasts that will be used?

Yes

I use the "Stich" command to connect the two edge loops of the SubD objects

@@podotools Thank you very much. I've tried it. I'm happy

Yes, lasts are difficult to sculpt.

@@podotools Ok, I now see that you don't want to share the stock last. While that is fine and you do have the right to not share it, just know that every single video you've made is pretty much useless since they are all fundamentally based on the stock last and you don't show how to make it or how to obtain it. Why do you even make these videos when they are not helpful?

@@PunCala there are several people that took the effort and created their own SubD last. I show an example, and when I should have had such an example when I started modeling lasts, it would have saved me a lot of work. I do share my lasts sometimes for free, but only with people that have achieved some level in modeling after investing time and effort. Show me what you have got! I plan to organize webinars about CAD last design, and people that follow the webinars will receive the basic last and Grasshopper definition.

@@podotools I work in a hospital. Your attitude reminds me of some of the older nurses that refuse to share their knowledge with young, new nurses, the ones they're supposed to train. All they achieve is making the hospital a worse place for patients.

Hi Mark, Photogrammetry is something I also tried, but I was not happy with the results. But maybe you have a better procedure, can you show something? I do not use a scanner for feet because I cast the feet, and then scan the plaster positive. Since I do not use a scanner at the place where I see my clients, I do not scan the feet when using just a foambox and blueprint. But that might be useful, although the shape of the foot is not the shape of the last, so "guessing" will always be part of the procedure. Scanning helps, but is not the complete answer on how to design lasts. I will own another scanner soon, maybe I will use that device to scan feet, when casting is not necessary. Thank you for your comment, please stay in touch. Erik Hondebrink

Thanks for the compliment Bill. I do use Grashopper for this, because I morph a basic last from one mesh to another mesh that works like a cage. This function is only available in a Grasshopper plugin (Fattener by Daniel Piker). Grashopper is included in Rhino and Fattener is free. I plan to explain my method more in detail by Webinars starting in June.

Hi sir, thank you for your hard working to explain us this function's, Could you help me with just one ready sub d file for last?

You might post it on the McNeel forum, under Jobs & Portfolio's. Or send me a private message.

@@podotools Thank you! How can i reach you?

​@@jean-baptistee.2686 podotools@gmail.com

Try and error and a lot of practice. Artec Spider scanner.

It is very different,and it depends on what you are looking for. For my goal, personal lasts and orthopaedic lasts, EasyLast does not seem to be the better tool. But maybe I am wrong, I have never worked with EasyLast.

@@podotools thank you very much 🙏

Hi Bill, I send the files to a company that carves the lasts out of wood on a CNC lathe. Several companies offer this service. I prefer wooden lasts above 3D printed lasts, much easier to adjust wooden lasts after test fitting than plastic lasts, and better for hammering nails into it.

I have a TRL OFM machine but I have also developed a good way to print lasts from PETG using Rhino and Simplify 3d and it has worked quite well for the last year. It is all in the gcode to make the last strong in the areas needed and i am able to make them so we can separate them in order to get them out of the shoe once finished.

@@billcrary2943 Do you offer this service also to others? So that someone can send you the .3Dm or .stl files with models you can print? And if so, at what price?

Rhinoceros3D

@@podotools Are there trial versions and what is the price?

@@magdmarestawy454 Ask google and you will find all the info jou need

Hi Magdmarestawy454 I'm using LutraCAD which in my opinion is super easy, fast and very userfriendly built

@@mariaaerts can you post an example of a last you modeled with LutraCad and the scan of the foot it is made for? Thanks in advance. (Lutracad is a plugin for Rhinoceros)

Hi Rene, thanks for the compliments . Bridge is also a good option, but that adds one ore more loops of faces. That makes it slightly less predictable. I also like the option to be able to choose "continuously variable" between matching the first loop to the second, or opposite. I also want to keep the layout of the SubD as it is .Since I keep the faces of all my lasts the same (although I have not been absolutely consequent over the years), I can compute the mean last of all the lasts I have made over time. Dividing the lasts in different groups of anatomical deviations I can compute an average last for certain types of feet. So when I want to model a personal last for someone with a HalluxValgus I can start with a last that already comes close. It is work in progress now, but I will publish the results.

Thank you Erik, I thought the same reasons, but It's better to read it from you to confirm. I agree that keeping the SubD topology is very important and Brige is always adding faces. I guess I will integrate Stitch more in my workflow. Sure, please publish the results. Your work is very helpful. Thanks again.

Hi Simcha, There are different opinions about this, but I always try to keep the sides of the (low) last where the heel is at its narrowest as straight as possible. Otherwise the (curved) quarters of the shoe will not stay tight around the heel when straightened. I once posted some pics about this in the shoemakers forum long ago. See: m.facebook.com/groups/shoemaking/permalink/1296927050346984/

@@podotools i have seen this post of yours in the past on facebook. now i understand it better with your explanation. thank you

@@podotools I been searching for weeks why last top is narrow. You are the first answer I could find. Thank you. Last making is more complicated than i thought. I don't even make shoes. I just wanted to know. So you add length to front of narrow part just to make it the same size?

Rhinoceros 3D

@@podotools thanks

You can find it in this post discourse.mcneel.com/t/fatten-cagemorph-subd/114465/2?u=podotools

​@@podotools Thanks for your videos. The last confirms my progress. UV N super points. I would so love to have your grashopper file....

Hi Philippe, The last is in Grasshopper because the cage I use is (a target mesh to which the subD last flows along from a basic mesh) can only be used by a Grasshopper function. I hope this functionality will also make it to Rhino, untill then I have to use a Grasshopper definition. This function can also be very useful to flow a complete shoe ( like the ones that you print) from one last to another, so you can use the same design for different lasts!

@@podotools Since you use the same last for everything and it requires another program, could you please provide us with the file of the standard last?

@@PunCala No other program is used, but for the modification Grasshopper is used. Grasshopper is integrated in Rhino. The last is made with standard SubD tools in Rhino.

@@podotools As most of us, me included, are complete beginners, could you please share the stock last file you made with Grasshopper scripting? It would help a lot in getting into this type of sculpting.