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Brodie Fairhall
Australia
Приєднався 25 бер 2019
I make educational videos for Makers.
Advanced Parametric Modelling - FreeCAD User Conference 2023
Video presentation from the first annual FreeCAD (and free CAE) conference.
Not a tutorial, just some high level guidelines, with examples to help with the creation of highly user customisable designs with FreeCAD.
Examples used in the video can be downloaded here gitlab.com/BrodieFairhall/freecad-user-conf-2023
Thank you to the University of Pretoria, Royal Institute of Engineers and EngineeringX for organising and hosting the conference.
Not a tutorial, just some high level guidelines, with examples to help with the creation of highly user customisable designs with FreeCAD.
Examples used in the video can be downloaded here gitlab.com/BrodieFairhall/freecad-user-conf-2023
Thank you to the University of Pretoria, Royal Institute of Engineers and EngineeringX for organising and hosting the conference.
Переглядів: 10 747
Відео
Why do my FreeCAD models break? - "Topological Naming Problem"
Переглядів 22 тис.3 роки тому
Wonder why your models sometimes break when you modify something? Can they be fixed? What the heck is the "Topological Naming Problem"? If you've been using FreeCAD for a little while and you're frustrated, this video might be just what you're looking for. Parts of this video move very quickly, it's not a tutorial about how to model in FreeCAD, it is purely about the topological naming problem,...
Fusion360 to FreeCAD - Part 2
Переглядів 13 тис.3 роки тому
Looking to move from Fusion360 to FreeCAD? This video is packed with as many tools, techniques and requests as I could fit in a reasonably short video. If you're just getting started, make sure you check out my Intro to FreeCAD Video first. ua-cam.com/video/_GxJkB23ZHM/v-deo.html Check out my Patreon www.patreon.com/makeor FreeCAD Web Page freecadweb.org/ FreeCAD 0.19 Dev Release github.com/Fre...
FreeCAD - Intro to Parametric Modelling
Переглядів 56 тис.4 роки тому
Learn how to use parameters in FreeCAD to make your 3D models customizable. FreeCAD has an incredibly powerful and easy to use parameter system that allows you to model something once, but create infinite variations. If you're struggling with FreeCAD or are coming over from Fusion360, check out my Intro to FreeCAD Video. ua-cam.com/video/_GxJkB23ZHM/v-deo.html Check out my Patreon www.patreon.c...
Fusion360 to FreeCAD - Introduction
Переглядів 135 тис.4 роки тому
Looking to move from Fusion360 to FreeCAD?Not sure how to get started? This introduction video will show you how to get started as quickly as possible without also making you sit through CAD concepts you already know. The next video in the series - ua-cam.com/video/fXoRAYv1wHQ/v-deo.html Check out my Patreon www.patreon.com/makeor Download FreeCAD 0.19 Pre Release github.com/FreeCAD/FreeCAD/rel...
Metal Plate 3D Prints with Nickel and Copper
Переглядів 20 тис.5 років тому
Learn how to metal plate your 3D prints and other Items in a variety of different metals. Learn how fix some common electroplating issues. Learn how to plate multiple metals onto a single object for interesting effects. Very small amounts of Chlorine and Hydrogen gas are given off by this Electroplating process, while the volume of gas produced is very small, the process should be done in a wel...
Metal plate your 3D prints at home.
Переглядів 143 тис.5 років тому
Learn how to coat your 3D prints with copper at home, with copper electroplating. Newer Video here ua-cam.com/video/HWBwebWAT9c/v-deo.html&t= Check out my Patreon www.patreon.com/makeor My Mini Factory profile: www.myminifactory.com/users/Brodie Raven Skull Model By 3DKitBash : www.thingiverse.com/thing:289987 I forgot to add a few things to the video. - The conductive paint is called "Leitsilb...
Amazing video man, learned a lot
Absolutely wonderful
Glorious
Silk pla Devil Desigin... looks metal. But i like Your approach.
There are 2 distinct types of objects in FreeCAD fixed and volatile. If you don't distinguish you will fight for ever. Fillets and chamfers just have to deal with both, so that struggle isn't easy. Always do them last.
I would like all the people who make videos on DIY conductive paint to test the materials by exposing them to temperature changes such as 5ºC to 40ºC, scratches, resistance measurements, shocks, etc. just to see the resistance of that or this particular method. Excellent video, I'm saving it and my like!
Thanks so much for the upload. I've finally dipped my toe into the metal plating 3D print field. All the help I can get probably won't be enough. Thanks, again for the video and tips. Keep up the good work. Will you go to Heaven when you die? Here’s a quick test: Have you ever lied, stolen, or used God’s name in vain? Jesus said, whoever looks with lust has already committed adultery in their heart. If you have done these things, God sees you as a lying, thieving, blasphemous, adulterer at heart, and the Bible warns that one day God will punish you in a terrible place called Hell. But God is not willing that any should perish. Sinners broke God’s Law and Jesus paid their fine. This means that God can legally dismiss their case: “For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life.” Then Jesus rose from the dead, defeating death. Today, repent and trust Jesus, and God will give you eternal life as a free gift. Then read the Bible daily and obey it. God will never fail you.
Thanks for this video, it helps a lot
I Like rule #2 'Stay Absolute' but I have one exception lol. When I sketch I have areas of the sketch that - in my mind - are actually sub-sketches. IE the details/hole/etc in the corners of each box. all those dtails will ALWAYS be in that corner and will move around with the corner when resized... Therefor I reference the details to the actual corner - BUT not directly. one point of the detail section of the will reference the corner to lock the sub-sketch in place to the corner- the rest of the details will reference that point. At not point (EVER) will any line/point/feature etc reference anything out side its own details. it is that which will break the sketch. Or a rat hole as I call it (because if u make one it will end up as a rats nest, lol)
Should be mentioned that in SOme cases you DO NOT want to have your fillets, chamfers, sometimes even holes in your sketch. They are referred to as dressing or dress-up operations because they are a completely separate operation if the object needs to be machined to make. You need to keep in mind how the objects are made or how the sketches will be used to build something. And there are exceptions. as in Mold making and plastics. I guess my point is you dont want to get in the bad habit if you plan on doing serious model/sketch making. And that bad habit depends on 'what' you are making, lol. In my opinion - 95% of the time - adding fillets in a sketch is asking for it.
The big one that stands out / common mistake people seem to make is, modelling threads in holes. The main issue I've encountered is that most machine shops tend to only support source files from one or two 3D CAD suites, if you don't use the same tools as them, you end up having to just send them a step file and if you need holes tapped, special requests etc. you also need a marked up drawing. Unfortunately, I haven't encountered a company that will take FreeCAD files for machining, so in the end there ends up being no difference between creating a dress-up feature using a dress-up tool or creating the geometry in any other way, because they'll just end up asking for a step file. This has thankfully worked out for me so far, even with designs that are destined for injection molding, so either CAM tools are just getting better or I have really, really annoyed many operators who have had to deal with my designs. I do hope that either an open file standard that includes all operations rather than just geometry gets universally adopted or FreeCAD files start being accepted by manufacturers (I won't hold my breath for that), and then we will have to use the right tools for the job.
@@BrodieFairhall Yeah I didn't even consider Commercial the compatibility issues. Well the could do it the same way Solid Works did it, go proprietary, charge 10's of thousands of dollars a year for a license and then a couple decades later offer a cloud version at $50 a year. that way its use will explode and you will find solid works cad files all over the place. lol
@@armastat Can't forget to lobby to universities to make it part of their curriculum and give it to students for free!
@@BrodieFairhall That one I can't argue with. otherwise no one would know how to use it since only multi-million dollar companies could afford the license fees.On the Plus side - universities are public and they share their science and designs. if u know how to find them/ I have Full Cad models right down to the nuts and bolts for all sorts of things, Space telescopes, gravity detectors all sorts of projects and NASA stuff. My best find was the entire Atlas Collider Machine at Cern. Over 2 million parts in cad form! Almost as wonderful was that the entire assembly may have taken long time to load to my laptop but once it did I could rotate and zoom on the model with no issues. Good software that.
Well it took a while but it looks like TNP gets finally fixed this year. With V22...
Would it work with water and salt instead of the electrolyte solution you prepared?
No, but then yes. If you look at how I make the electrolyte in my other plating video (ua-cam.com/video/HWBwebWAT9c/v-deo.html), you'll see what I mean.
so good ...may you share ratio of material. first liquids especially. vinegar and what mixed for electrolyte :)
It's honestly impressive how truly terrible the UI of this program is.
Is it that it looks bad or do you believe it is bad to use? It has changed a fair bit since this ancient video came out (0.22 is bringing some more significant changes) I'll agree, it's not the prettiest, but I think it is well set out for being fast/efficient (which is the opposite to what I find with Inventor and Fusion), especially for keyboard shortcuts.
How long does the electrolyte last?
I still have the electrolyte from this video. I run it through a coffee filter to take out debris and add more distilled water to dilute it as more copper dissolves in it and it gets darker. As long as it doesn't get contaminated with other metals or chemicals, it could last year's.
what happens if you dont heat up the mixture ?
It just takes significantly longer to make. My second electroplating video has a different method that doesn't require heating that might work better for you. ua-cam.com/video/HWBwebWAT9c/v-deo.htmlsi=lZEF6iYOrrJdYzeh
thanks for the immediate response @@BrodieFairhall I tried it without heating it up , it kinda worked.
one more question if you dont mind , I used graphite spray paint on a plastic piece but it didnt work. I tried it on a metallic piece and worked fine. could it be the paint or the power supply ? I used a charger with variable voltage @@BrodieFairhall
Price of that paint though.. Bad news for my life size terminator print..
I now use a conductive nickel paint made by MG chemicals. It bonds much better and you get way more for your money
Who in the right mind thinks that changing set names that work as some sort of ID should EVER change?
It's not really "changing" the ID's and when you look into how it works, it's a little more complicated to do than it initially seems. The issue is that every time you make a change, it rebuilds the object from that point and the ID's are created each time this happens. My understanding of how the Topo naming fix works, is before a change is applied, FreeCAD works backward through the nodes and notes which actions rely on geometry that was previously created and when it rebuilds, it tries to ensure the same ID gets applied to each piece of referenced geometry.
@@BrodieFairhall Thanks for the explanation! I wonder how other CAD software handles this …
I wonder if you can add and remove parts with parameters. Like in OpenSCAD where I created an object where I can add a number to stack that many object and calculate other parts.
ua-cam.com/video/Yp6cIMA7LsI/v-deo.htmlsi=n8gcYfSqONBai86v This video (rather long, but it was a presentation rather than a tutorial) may have some of what you're looking for.
I just started freecad and so far i like version 0.21. it reminds me of solid works 2020. However, the newest dev version of freecad is amazing with the new sketch tools and the ability to type dimensions in as you draw the sketch. Plus realthinder, one of the devs has made some great fixes to the naming topology.
When's the next conference and can it be attended via Zoom?
I believe it is February 2024 and the plan is for it to be both online (like last time) and in person. I've got what I think is a very interesting presentation planned. I'll post updates when I have details.
Anyone have a link to the paint
Instead of the paint in the video, I'd recommend a nickel based conductive paint (MG Chemicals makes a really nice one). It's far cheaper and I find using the spray version gives me a much better result that the silver paint
@@BrodieFairhall I am open to anything that makes my part conductive not had any luck so far
@@1937Brett This is what I use mgchemicals.com/products/conductive-paint/conductive-spray-paint/shielding-paint/
Do you have an idea if there is someone or a company that does this? and where you can send an stl file and they will print it and make it gold
I know there are companies who do printing and companies who do metal plating, but I don't know of any who do both. I'm sure they exist.
@@BrodieFairhall its so hard to find ugh😂😂
@@julmjur3752 you could do it in 2 parts, get a service like shapeways or pcbway to print the item. When you receive it, send it to a company who specialises in metal plating. It's a bit of extra work and shipping, but it might be a lot easier than finding a vendor who can do both.
I think my biggest pet peeve over FreeCAD is the ridiculous defaults that make it very unintuitive out of the box. That and being able to display the names of the tools in the toolbar, rather than having only the icon, would allow folks to identify what tool is what- especially if they're coming straight from Fusion. Sure the wording might be different, but it's gotta be better than a very obscure icon.
There is a lot of talk of the UI being completely redesigned, which will be fantastic. Fusion's large icons with text, is fantastic for beginners, but having to open a dropdown to get to a lot of tools, paired with the lack of context based shortcut keys can become very frustrating when you've been working with it for a while. Something in-between would be fantastic. Something you might like is the Modern UI Add-on, it adds a ribbon style toolbar, all icons are accompanied with text and you can customise almost every aspect of it.
Freecad является полностью инвалидным когда дело доходит до фасок. В коммерческих программах моделирования, на сколько я могу судить, формы для расчетов и привязок остаются исходными, а фаски это как дополнительное свойство, которое отображается и экспортируется в готовых моделях, но не является частью внутренней модели. Но во freecad, похоже является! И разрушает модели, на которые были потрачены часы!
It sounds like you're talking about 2 different issues here. 1. The limitations with full width chamfers and fillets in the Open Cascade Modelling Kernel (OCCT, which FreeCAD uses) 2. The other issue, which sounds like the main one you're having, is the Topological Naming Peoblem (ua-cam.com/video/6p2vqEEmWq4/v-deo.htmlsi=e86N33xLW8MYe7pv) Both of these limitations have solid work arounds, but require you to become pretty familiar with FreeCAD to use it effectively. You may want to try using Realthunder's Linkstage Fork of FreeCAD, which can be found here (github.com/realthunder/FreeCAD/releases/)
AWESOME! Please, do more videos like that!
Very good explanation. And I loved the part where you said this was THE correct way to avoid a broken model. I had not picked up the offset idea already. Thanks.
Brilliant. Thank you
this is so smart bro.. :O and its a 4 year old video.. knowledge is pawa... i beed weak so far... but now... im even weaker :D
Thanks for not making an hour long video, great and short, straight to the point.
This video is a fake(ish). As we can see in the beginning dude made an electrolyte with vinegar, hydrogen peroxide and copper, which is copper acetate (green colour), and in the end he is using blue electrolyte, which is copper phosphate (blue), also he pours electrolyte from a industrial container suddenly. But he never mentioned he changed electrolyte.
Copper acetate is definitely blue, try it yourself, perhaps you're thinking of nickel acetate? The very deep blue is because I'd been using that electrolyte for a lot of plating while getting footage for the video and it became far more concentrated. If I was going to bother faking something like this, I'd at least use some dye to make the colours the same. The "industrial container" is just the 2L container the cleaning vinegar I purchased came in. I'll admit, it's a terrible video, but nothing in it was fake. I'm happy to answer any questions you have about it.
A shame there is not a way to increase quality of mesh as part of exporting to stl or other slicer compatible file format in the export dialog or freecad settings. I love freecad but it's sometimes so convoluted which makes it hard to get things done ☹️
It would be really great to have that, even if it was just a pop-up dialog like the step export one if it can't be included in the save file dialog. Or at the very least, extend the import/export preferences for collada files to work for all mesh exports.
In 360, and can extrude on both sides, how do i do that in free cad
When you pad (extrude) an object, just above where you enter how much you want to pad, there is a drop down. By default it will say Dimension, if you want to do both sides, you can select "Two Dimensions". This will give you a second place to enter another extrusion length. Hopefully that all makes sense.
Incredibly informative video! Do more uploads pls! 👍
Seeing those complex expressions makes me think of how elegantly those things could be solved with a simple scripting language like in OpenSCAD. Even just multiline expressions would be neat for better readability.
Good idea. Those nested ternary expressions can form really nice tables when put on multiple lines.
OpenSCAD is perfect for this kind of thing! Thankfully FreeCAD has support for OpenSCAD built in, as well as being able to directly manipulate anything with Python and nicer front end tools like Configuration Tables. Doing this the same way I did in the video wouldn't be great in production, but it was the most direct way I could think to demonstrate it quickly.
Thank you so much for the so much needed introduction to this topic. I am a firm believer in open source software, but FreeCAD still needs a lot of renovations that make it intuitive to use.
You'll be pleased to know there is a lot of development work going on in that area.
Am I the only one hearing a ticking sound in his audio? its really hard to get through
Very cool.
made the inlaw a copper co... cockatoo
I would like to see a way using the sketcher to create a variable number of holes equally spaced (in a circle or an array) where the number of holes is defined in a spreadsheet.
That is unfortunately not something that the sketcher is intended to do. There are some hacky ways to do it that I might look at putting in a video. Generally though, the "correct" way to do something like that is by creating one hole and using a part design/draft array tool to replicate the holes in the places you want.
@@BrodieFairhall The array tools in the sketcher could be modified to accept equations, but for now, they only seem to allow constants. It makes some fully parametric designs impossible, or at least really convoluted and hacky to implement. This kind of thing is much easier to do in OpenSCAD.
@@douglaspeale9727 yeah, probably the easiest way to make sketches do things like that is to use a python macro or the openscad workbench. It would be great to see sketch arrays turned create a new type of array object rather than just replicating the sketch elements, so they could be used in a proper non destructive workflow. I think the sketcher would require a lot of changes to do this though, eg, you create a rectangle and it's not shown as a rectangle in the sketch elements, it becomes 4 lines. The element list would likely have to have a tree allowing those 4 lines to be grouped as a rectangle and this would allow for the creation of other groups, like arrays, which could have their own parameters. I'll bring it up with sliptonic when we have our next monthly meeting and see how much work it would be and whether it could be added to a feature road map. The easiest hacky way I can think of to make a variable number of sketch elements to cut the number of holes specified in a spreadsheet is to create a whole lot of them and add an expression on the construction geometry parameter that will set it to 1 or 0 depending on the number in the spreadsheet (the same way I show and hide the planet gears in the assembly in this video).
Hey, do you plan doing more videos on your channel? Like tutorials?
I have a whole bunch of videos planned, finding time to actually make them is the challenge. Not likely to get many done in the next 6 months.
@@BrodieFairhall ok, Im looking forward. Do you use the standard Free Cad or the RealThunder version?
@@Gabs_Labs I use the official FreeCAD releases for anything serious, but I do play with the realthunder version occasionally just to keep up with the changes.
It looks like metal, but how does it feel? Does it have that cold to the touch feeling that real metal has?
It feels like metal to touch, but it's missing the weight of a solid metal object.
@@BrodieFairhall Sweet perfect for making a shifter knob for my Logitech H shifter. Does it wear off if you touch it too much?
@@antjones2281 it will eventually wear, both because copper is very soft and through the acids in your skin. You can just plate it for a longer period of time to build up a thicker coating. If you look at my other playing video, it also shows nickel, which will last longer with that kind of use than copper. If you do decide to do it, instead of using graphite, I now use a nickel conductive spray paint (most commonly the one made by MG Chemicals), it gives a much, much better result and it's far cheaper than the silver paint.
Thank you for the video, is there any possibility to trigger the model outside freecad through cmd and also change the parameters outside the freecad(i.e;through python or cmd)
There absolutely is, you can use FreeCAD in headless mode. I've not done much with it in the last few years, but there is plenty of information in the documentation
unfortunately this video proves that FC is still way from being reliable app. something here something there... it's more like tinkering with the app rather than working with the model 🤔
Not going to argue with the rough edges and missing quality of life features limiting the use cases and uptake of FreeCAD But the raw power FreeCAD has also puts it ahead of so many other professional tools. Keep your eye on FreeCAD over the next 2 years, Ondsel has full time paid developers working on a lot of the QoL improvements (like topo naming) and the FreeCAD association has made it much easier for companies to come on board as sponsors
I can't wait to see what the next 2 years brings to FreeCAD
nice
Why , oh why isn't FreeCAD usin the RealThunder's topological fix? Is it a matter of pride?
It's actively being merged right now. It's a massive change to a lot of code, especially since the versions diverged so much. An open core company called Ondsel has some paid, full time Devs working on getting the topo naming fix merged and ready for action. You can check it out here github.com/FreeCAD/FreeCAD/tree/development/toponaming
@@BrodieFairhall This might be the best news I've read this year
@@henrymach the next 12-24 months for FreeCAD are going to be very significant, there is a lot happening.
Also what concentration is the hydrogen peroxide? 3%? 14%? Does it have to be good grade or is normal hydrogen peroxide from the store fine?
How much voltage do you recommend setting it to to start with?
With this electrolyte, I'd start with around 2.5V to 3V and increase it if you need to. I also recommend using a nickel conductive paint now, instead of the graphite or silver paint. MG Chemicals makes a nice conductive Nickel spray paint, which ends up being much cheaper by volume than the silver paint and it works so much better than the graphite.
@@BrodieFairhall Thank you so much!
Thanks! This is cool!