The TRUE COST of CNC machining!

1. If you are going to interpolate the bores make sure your machine is properly maintained. Excessive backlash will degrade circularity and can cause significant stress risers allowing a properly designed part fail because of poor manufacturing. Of course you could also just use a boring bar.

2. Great video. Thanks for sharing.

3. me welding a tube and 2 tringles of steel to the tube

4. Good work!!! We also have rich experience in sheet metal fab, we are a strong manufacturer in China, with high quality and competitive price.

5. Fascinating information. 100, eh!

6. What bout Protolabs? Just priced a part and it was $1000 less than the place you used.

7. Wow $40, but I need to spend $50 for a CNC machine like this , such a bargain ?.

8. A friend of mine used to work as a prototype machinist and teacher for machinists, and he always said, ask the constructor if the tolerances NEED to be as tight as he has set them on the drawing, or if he did it just of habit.
   His first job he ran a series of pieces on a clapped out mill, so they scrapped a lot of them for being out of tolerance, the material was just cheap steeel, so no biggie, but it was a lot of machine time wasted.
   When he saw them mounting the piece, he realized that the tolerance should have been 0.1mm, not 0.001mm
   99% of the parts he scrapped would have worked just fine.

9. znas ti posto je to

10. thank you very much gentleman..

11. Bro, can I come over and play?

12. How does one learn machining if youre doing it as a hobby? Is it possible? The only thing I can find are full time trade school courses.

13. What about casting?

14. +/-.001"? That's a big tolerance from where I worked. I was doing OD grinds with a normal tolerance of +0/-.0005", so a callout for +/-.001" was considered easy work.

15. When I worked at Boeing as a machinist they told us once that due to tolerances a 707 could vary 7 feet in overall length.
    I ran an electronic tracer and had tolerances on two parallel surfaces over a 6" span of +0.0/-.005 on a titanium part refueling nozzle. Every part I made passed inspection.
    Management came down on me once for making less parts than the first shift guy till I pointed to all his reject tags.
    That shut them up. Lol

16. Pay attention to price, beat down supplier price, bristelle, pipistrel not selling……cirrus and Cessna about the only thing selling. You better call grs and not brs….if you don’t you’ll fail. Source…..high net worth individual

17. it's insane what you guys are making! This is true insanity. I just love this.

18. that piece unless it is absolutely necessary in my country we would do it more economically

19. interesting

20. You guys definitely are overcomplicating the tool paths and setups. Keep the part on the bar, hang the bar out of the vice, and profile the side along with the hole. Drill two holes in the corners of your fork for the radii. Saw part off. Now profile the triangle and drill your cross hole with the part on its side. Stand it up and mill out the fork and there you go

21. My question is, by jyst looking at the drawing how can we estimate machining cost without any software or aap?

22. Not much of a cnc guy yet but I think its really cool. Planning on becomming a tig welder 🙂

23. if you are sending the file with all tool paths/Gcodes it honestly should not cost that much you have already done 90% of the work and thats being Generous.. 10 bucks for two, but buying only in bulk and still costing 8x per part would only be worth it if you could not produce the part how ever at that point and cost might be worth looking into buying some capable machines, just an order or two from you is buying that machine there using food for thought

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