I put the Point as geometric element to the end because it is rather construction geometry. are there errors or improvement recommendations concerning the contents? So I started this and I am not sure whether I pushed it over the top: The preliminary remarks took already 10 pages! So I better ask now if it is too detailed, before I'm going into the constraints - which is what I really wanted to talk about.Įspecially I would like to hear your comments on the following: Several topics here in the forum show, that some users have to be taken by the hand for every single step.In many tutorials Sketches are badly constrained.The impression that proper sketching is often learned on the fly.Here is a first go, currently as a pdf, I would like to provide it as HTML and video as well. Keep plugging away doing simple stuff in FreeCAD and following some of the tutorials skipping through some of the bits that get repeated as they are created for beginners so often repeat steps.Since long I wanted to create a Sketcher tutorial. Really good if you are creating something that you want to make in different sizes.īTW, I'm no expert on FreeCad just commenting from my experience using it. Quite a bit further down the learning adventure though but great once you get the hang of it. The bees knees though is to think through your model project and create a spread sheet of dimensions and the formula in the dimension will update just by changing the values in the spreadsheet. Then it becomes a search to see what else needs changing. The caveat is you need to be careful in your work flow or risk breaking the model. Makes Free CAD a much better choice for me at least because being parametric it's very easy to change dimensions by going to the relevant part of the tree then the sketch is available. Just need to remember to save sketch in 2D mode before making it 3D. Thanks for the link Don, now it makes sense. RE changing the dimensions in v5, in the tutorials I watched it looked like double clicking on the dimension allowed you to change it? (Haven't got that far in v5 yet.) Maybe I'll be able to make a relatively smooth transition from DSM v4, into DSM v5, into FreeCad? There's no doubt about it, FreeCad has WAYYYY more power and sophistication than DSM. I'm hoping that by using the constraints in v5, it will let me ease my way into parametric modeling. I just loaded DSM v5 last night and I am still exploring it. I know some of the restoration pictures show a mix of duals and singles, but I think that was just because they needed to get some tires under Big Red and that was what they had available. The pictures that I have seen of the truck on display at various locations all seem to suggest that they normally used super singles for the drivers, and on the trailers. Some of the various pictures of Big Red seem to show a mix of duals and super singles, especially the 3/4 views showing tractor and the double trailers - but I think it's just the camera angle. I really-REALLY want to build an RC model of Ford's Big Red, their 1964 gas turbine concept truck shown at the World's Fair that year. What do I want to use F/C for? I build RC models, and I 3D print some of the parts. DesignSpark also has trouble with fillets on complex curves, or at least I haven't discovered the secret handshake that will allow me to do it. Yes, you can set up a mirror line and create a pair 3D objects about that mirror line, but if you somehow break that mirror line link, there's no getting it back. My biggest complaint about DesignSpark is that you can't mirror a 3D object. From what I've been able to figure out, DesignSpark is a dumbed down version of SpaceClaim. DesignSpark uses direct modeling rather that parametric modeling, but version 5.0 gives you the option of adding constraints.ĭesignSpark is a freebie from of all people, Allied Electronics. I've been using DesignSpark 3D Mechanical when I needed to do any 3D modeling, I'm running version 4.0 now but I'm seriously considering going to 5.0.
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