Congrats on the new machines! It would be great to get a video on why you chose what.

@MagnusMacdonald

4 жыл бұрын

Thank you Oakwood. The answer to that is not exciting... the machine was in stock and at a price we could afford right now. If we had a little more money and time, then we might have gone for a Mazak. If money and time were totally in our favour, then we would have gone for an Okuma.

@OakwoodMachineWorks

4 жыл бұрын

@@MagnusMacdonald Thanks! I actually just found your video on the kitty, didn't even know I missed it!

Magnus that time and process is way over the top for the blades. Switch to a high feed mill to rough and then use a ball to finish. Leave 0.4mm for the finishing ball endmill should leave a mirror. Hard you hard milling or annealed?

@MagnusMacdonald

4 жыл бұрын

Hey James, it is definitely slow going! I'm milling the steel soft ...should I be milling with the ball endmill you recommend when it has been hardened (plus tempered)? I'm totally ignorant with "annealing" and had to google it. Still not clear to me... is annealing basically just the whole heat-treat process?

@rockets4kids

4 жыл бұрын

@@MagnusMacdonald How does someone wind up with that much metalworking kit without ever learning such a basic concept as annealed vs. hardened metal?

@MagnusMacdonald

4 жыл бұрын

@@rockets4kids Looks like I've never needed to know it (until James asked that question) ...only ever made things out of titanium for 6 years.

Im keen to learn to do something like this but god dam that is one serious CNC!

Nice job took me 11 blades to figure out my tool org to get it that smooth off the machine nice

Hey Magnus. Love your work. I am a machinist and I work with cnc every day and I would love tottey making some knifes one day. Tobad I am really to busy making other people's stuff in my shop haha. And btw that little horizontal mill is freaking awesome 👍

@MagnusMacdonald

4 жыл бұрын

Thank you Nikolai. I am sure you could squeeze in just 30 minutes here and there ...you would have a knife pretty soon. Happy to send you files if that helps.

@nikolaiownz

4 жыл бұрын

@@MagnusMacdonald I will remember that. If there is anything cnc machine related both turning and milling I can help with you are welcome to send me an email 👍 vohnsenATgmail

You've invested so much money into this cnc stuff but didn't invest into any education in its operations. Might be wise to start some schooling.

@SeattleRingHunter

4 жыл бұрын

Machinist Secind that “Titans of CNC Academy” on the KZread!

@MagnusMacdonald

4 жыл бұрын

It's actually a double whammy... I didn't really want to buy the machine ...nor did I really want to learn CNC (not for business ...but for my own personal interest - then, yes!).

Hi Magnus, I see that Grimsmo currently is developing their new knife as well. (The Rask)... John does all the 2.5D milling first, then heat treat, then back on the fixture to hard mill the bevels then onto surface finishing (vibratory tumble in media) and final grind. Have you considered doing this with your knives? The process seem pretty well dialled in requiring less hand finishing.

@MagnusMacdonald

4 жыл бұрын

Hey Ian, it seems he uses (or used in the past) a type of grinding wheel for the Rask ...and this is what he's trying to use again. Short term I'm just trying to get these knife out ...and so happy to hand-sand. Long term I'm hoping to have it all done on the machine(s). Will have a little look at hardening the blades first. Cheers Ian.

At 2:02, it looks like you're ramping down in the z axis. If so, then it explains the tool marks you're experiencing, because you're cutting with the endmill's sharp corners. Switch to a corner rounded EM or cant the fixture so the bevels are perpendicular to the spindle. If you can, use a facemill rather than an EM. Flat EM's have a concave dish ground at the end, so the only part of the tool cutting are the sharp tips. Not ideal for facing or contouring . Lay down an upside down plate and you get the same thing. Only the outer rim is making contact. General tips from watching your other vids. 1. Don't plunge with a ball EM or use it to rough out a pocket. Save them for final finishing and avoid using the bottom/center of ball. The SFM is 0 or very close to 0 at the center. Not good for the tool. 2. Try to use the thickest and stubbiest tools you can while maintaining proper coolant flow and reaching the necessary contours. Rather than taking 30 passes with a .25"/6mm EM, use a larger EM and take fewer rouging passes. 3. If you can, enable both ways milling, drop down the Feed and Retract planes, and/or select keep tool down. Reduces time spent cutting air and its takes seconds to do. 4. Look into the Nampower brush. Might reduce time spent hand sanding. 5. Try what @ Machinist said and use the side of the endmill rather than the bottom to cut the bevels or a tapered EM. Many sellers should a variety of angles in stock, ready to buy, or you can order a custom EM with your desired taper angle.

@MagnusMacdonald

4 жыл бұрын

Cheers Pavel. Yes, I do use a corner radius tool. I've found that both ways milling leaves a poorer finish (well, I found that in the past ...have not tried lately with recent improvements I've made). Also, yes, will look at name brush. Thank you.

What are you using for the finish cutting? Share the fusion360 file? Also no doubt you've seen grimsmo knives? They have this process dialed in

@MagnusMacdonald

4 жыл бұрын

Hey Manny, the file is a Frankenstein monster of a thing ...but I will share a file(s) in some videos soon. Grimsmo's Norseman knife has the machining lines left in the blade (almost certainly part of the iconic look). I'm definitely trying to avoid that with this knife though.

Hey bud! Hope all is well!

@MagnusMacdonald

4 жыл бұрын

Hi Tokin! Yes, we a good thank you.

Looks like you lost weight. I hope your health is all right!

@MagnusMacdonald

4 жыл бұрын

Hahaa. It is better than ever. I was fat! Took advantage of the recent lockdown and cycled a few hours per day.

Hey im not sure if i missed it, but is that a titanium ore a steel blade? Cause i thought titanium is bad for a real knife blade. Would be nice to hear from you ;)

@MagnusMacdonald

4 жыл бұрын

Hey Lennart, you are correct ...titanium can have an edge put on it - but it will dull pretty much immediately. This steel is a type of stainless called RWL34 and is made by Damasteel (in Sweden I think).

@he-mansuncle7661

4 жыл бұрын

Magnus that’s gonna hold an edge forever!!! They make some of the best steel and stainless damascus in the world! Can’t wait to see you get this dialed in and mill a damascus folder! Great to see you uploading again!!!

@MagnusMacdonald

4 жыл бұрын

@@he-mansuncle7661 cheers Phillip. Going to be ordering some Damasteel Munin pattern soon! 😁