Well I almost got a good complete piece then the last line of code everything went wonky. Need to learn how to tool change and predrill so that my holes are more round and my starts are cleaner. Also how do you free a piece once it’s done I’m assuming that it won’t cut all the way through to avoid it flying off?
May consider a bullnose endmill for those inclined portions. Also, looks as though you may have a clamping or work table issue. Your z-axis doesn’t seem to be perpendicular to the work table. To prevent pieces from flying out while cutting. Some people program in small “tabs”. However… Since you have a thru hole in this part. You could simply use a bolt and washer to clamp the part dpwn making use of that feature.
@Chaotic_Logic
what leads you to believe their tram is off?
The step milling around the hole OD look uneven
The hole is uneven because I didn’t predrill
@Derek_Schuetz
I think they may mean the contours on the plane around the flange?
@Paul_Frederick ah ya it’s actually much better then the inner, but in still working on feed rate and setting up my stock so I’m not drilling with my end mills
@Derek_Schuetz
evaluating machine tool cutting is an involved topic. Literally volumes of books have been written about it. Drilling with your end mills is likely not the most critical issue you need to address either. If everything else is right that really shouldn’t be an issue at all.
@Paul_Frederick ah well that’s good to know I keep hearing so many different opinions. I know for a fact though not everything is correct
@Derek_Schuetz
everyone has an opinion. Most are completely invalid too. Being based on superstition, or some other equally unreliable belief system. One fact is true, what works for you will be somewhat unique. As every machine has its own sweet spot. That is due to mass, power, resonance, and a host of other factors. What works for Joe running his Boss 5 won’t necessarily be what works for you. Even if you both share the same end goals. How you both get there will be radically different, due to your dissimilar methods of conveyance.
A one point I kept a notebook where I cataloged various jobs I did. That helped put things into focus for me. I would note the material I worked, the tool I used, the speed, and my conclusions of it all. Now I continue that in my head to some extent. But I still believe writing it down initially helped me to begin ordering the data. It created the outline, that I subsequently filled in details to, over time.
What you are looking for is the happy medium your machine works best at. It will be an ongoing process. Every cut will make you more familiar with things. Experience is largely a collection of failures, interspersed with the occasional success. Because once things work some move on to greater challenges.
Not knowing how you went about milling your piece, I will offer some thoughts.
Rough cut first. Hog out material within a few points of your machine’s accuracy. Check to make sure you still have material to remove and then do a finishing pass with more intricate tooling.
As for removal of the part, if you have a vice and hopefully a pair of parallel bars means you could machine the part on top of your stock and then either cut the excess of the other side or just face the back side.
@Kyle_Kerr
roughing and finishing is a popular practice. I actually don’t know of any other way of going about it personally. At least not one that works.
@Paul_Frederick how would I set that up in fashion 360
@Derek_Schuetz
I don’t know. But I bet there’s a menu item for it somewhere. Because it is just such an accepted practice. It would be quite an oversight if they left the feature out.
@Derek_Schuetz
terms are a bit different but I think this page covers the topic https://othermachine.co/support/2d-3d-design/fusion-360/ Down in the “Toolpath Setup: 3D Adaptive Clearing” part at the end of the page
@Paul_Frederick thanks you paul
@Derek_Schuetz
yeah don’t expect to master CNC overnight. It might take a couple.
You can use tabs for your parts not to fly off the stock block.