Guitar Toolpath Cam process in Fusion360
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- Опубликовано: 10 июл 2024
- This video shows you how I lay down the toolpaths for my guitar.
The first few slides show you how I do doublesided CNC machining on my DIY cnc. I use the doweltechnique, with 6mm dowels. This is just one of many ways of doublesided cnc milling. (I'll maybe make a video on different options for doublesided milling later).
Then it takes the guitar from my previous video and shows you how the toolpaths are made, the dowelholes and holdingtabs are added and finally a simulation of the whole process.
I might adjust a few values (like the depth per pass in multiple depths) and there may well be faster or easier ways to my CAMtoolpaths, I sure like to know!
I you have any suggestions, please let me know in the comments!
For more info on my CNC machine and guitardimensions: www.audiohotshot.nl 
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Great! Just straight ahead meat and potatoes information. Thanks
And perhaps, by accident, some mayo on the side 😉. You are most welcome!
I wish you would have walked us through the entire process of setting up the CAM operations like you did with the first drilling operation for milling the peg holes
Does ruclips.net/video/qCEKj0vMkJM/видео.html show you what you're looking for? Do you mean by setting up the Setup proces with all axis in the beginning as well? Or more in depth in regars to the CAM process overall?
Aah 2 roughing passes on the contour!! So THATS how you get a nice wide channel round the guitar thats more than a tool width. I've been struggling with that bit for a year!!
Before I discovered the "wide-channel"-trick Fusion always gave me the dreaded 'red-lines-syndrome'. Now the 'wide-channel'-trick saves me so much frustrations, I also use it in other projects. I'm glad I could be of any help!
So am I correct in thinking that when you flip the drawing to set up the back side operations, that fusion calculates all the code based as a negative distance( in this case since it's flipped, up from the spoil board) as opposed to working from the top of the stock? If that makes sense?
Not quite, for the backside you still have to indicate which way is ‘up’ for Z, just like you would for the topside. You do this by making sure Z is pointing upwards. As Z is now on the spoilboard, instead of on the stock, Z is still calculated positive while zero being at the bottom (what now is your flipped topside). If that makes sense :-) You can see the indicator in my vid when I select the bottomjob in Fusion.
Also you should think about around which axis you like to flip the board; I like to flip things around the Y axis, if find it easier to remember :-) That means that Y has to keep pointing in the same direction as for the topjob as well.
I made it a habit of checking and doublechecking the three files (dowelholes in spoilbord, top- and bottomjob) in bCNC (by loading them in). That way I make sure I flipped things the correct way.
Hope this short story made it a bit clearer. :-)
Think I've got it now, so origin goes to the bottom side, hence the z zero at the spoil board for the second side. Thanks so much for your help and all the awesome detail you provide from your workflow
You’re welcome!
If you don't get Y centered you will have two halves that don't match. Drilling a hole on Y zero would allow you to readjust Y if necessary, when flipping the piece, by checking that the bit is aligned with the hole. Setting X off it as well would allow you to regain both X and Y
My machine performs a homing operation when its switched on (from there on it calculates every position from these home coordinates). Then I move the machine to the centre of the stock (the machine moves in relation to the home position) and tell my machine these x and y are the zero positions. By using dowels and flipping the stock the centre point of the stock is still in place. And thus x and y zero of the machine are still consistent as well. So when I start the other side job I can easily send the machine to its original zero position by a push of a button.
Just to be sure, I do write down the Machine position to ‘remember’ the zero position of the Work position; in case of emergency I could reprogram the x and y zero after a failure or so. I think this is more precise than positioning the machine manually :-) Check my other video’s, it shows you how I do this on the machine. (For example: CAM & DIY CNC machining Guitar Body with Fusion360 ruclips.net/video/qCEKj0vMkJM/видео.html )
This way I could even do the front ‘today’, switch off the machine, come back ‘tomorrow’ and start at the very same precise position. It’s what I think is one the wonders of CNC machining :-)
@@Audiohotshot Ok, then you are essentially accomplishing the same thing with the dowel positions - as long as they are the same distance from the center position then of course it works. And of course the body must be centered on Y0 too. So yes, the extra hole is not necessary. I manually home my router - but if it is returned to X0 Y0 before I switch it off, I just have to make sure it is zeroed without moving it when I switch on again.
@@woodfinchcrafts7267 Just my 2 cents: I do not know if you machine has limitswitches installed, but my DIY CNC has, and they act as soft limits, not hard limits. GRBL then allows you to use these limits as 'boundaries' for the homing procedure. From then on, every position is calculated in relation to the home-position. Your machine now 'knows' the dimensions of your workarea. You don't have to worry about crossing the limits of your machine, that is all taken care of. I'm using bCNC as software on my RPi and it works as a charm.
Very precise positioning every time; I give the HOME command, place my stock, position the mill, set x and y to 0, run the job. Let's say I come back the next day then, after powering of the whole machine in between, again do a home procedure and I can return to the same exact centre stock position.
If possible, I recommend you give it a try :-) Hope this helps!
@@Audiohotshot I built two machines and seriously considered adding limit switches, but realized for my purposes I would hardly use them. It would have been only for unattended routing, to prevent error. I'm now using Vectric Vcarve and LinuxCNC and that has made errors largely a thing of the past. I do understand how a fixed home helps, but I prefer (seeing as my table is over 3 feet by 4 feet) to cut on different places to even out wear and reduce spoilboard replacement
So with you origins are you zeroing from the center of the work piece?
For X and Y direction: yes. For Z no; depending on which job I'm running, top or bottom. Have a look at: ruclips.net/video/qCEKj0vMkJM/видео.html for topside zeroing and ruclips.net/video/qCEKj0vMkJM/видео.html for the backside zeroing.
Hope this helps!
Excellent video! What’s the machining time??
Way too long (about 3 hours in total orso)... :-) Take a look here for a shorter machining time version. Same design, improved strategy: ruclips.net/video/sY3E7iepzos/видео.html
@@Audiohotshot Same time as in Aspire
Why is it impossible to find anything on RUclips that explains this process without leaving out literally half the fucking steps. Y'all are god damn infuriating.
Well, ehm, do you mind me asking what exactly you are missing? Perhaps I can help you out.... I started making this video because I felt the same! I have this other video about doubleside milling a guitar neck; maybe that will help you out? It's here : ruclips.net/video/FBx4x2T-iIY/видео.html
@@Audiohotshot 1st I respect you time and your content, however, You left out the entire milling setup,... you say it's pretty standard,... and you said "Fastforward",... well many of us would have liked to see the ENTIRE PROCESS,... UNABRIDGED,... especially after investing time watching your design video thinking we're going to see the hole show,... I feel like I wasted my time. You start with this great process then you short cut your way through the rest,... all the tooling setup,... I've done many years training student in CAD, leaving this out is maybe why you have 203 likes as opposed to many thousands.
Perhaps this video covers some of what you are looking for: ruclips.net/video/qCEKj0vMkJM/видео.html
Or perhaps the 'sequel' on that video: ruclips.net/video/sY3E7iepzos/видео.html
Maybe even this is helpful? ruclips.net/video/8iaGUxPc05M/видео.html
Hope this kind of helps :-) (not really sure what you're looking for though)