Making mistakes and learning from them! - Quarantine Shop Life 20

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Gear we use:
Sony A7iii
Zoom F1-LP Field Recorder
Rode VideoMicro Directional Recorder with Dead Cat
JOBY GorillaPod Compact Tripod with Ballhead

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Fan-Made Intro from: @zblade_open (Martin from Slovakia, thank you!)

For more Epidemic Sound music:
Sebastian Forslund: Bring Out The Thunder (Instrumental Version) (Intro Music)

[KeithStrang]

You’re only a few toolpaths into that machine and into 5-axis. No one has done better.

Everything has to be earned. Stay humble, tenacious and keep on keeping on man!!

[agiehss]

Hey John, just to make a very tiny suggestion: You have this incredible 5-axis machine, but that does not (and should not) mean you *must* make every part in one grab. Yes... if you had a longer blank this could be a one-grab part, but considering what you started with, a 2-grab approach may have made your job quicker and easier (with just as accurate a final result). :-) Hang in there!

[wernerberry]

Buddy that was a win win! We learned a bunch of stuff and still have a usable part! Next time will be a million times better! Thanks for sharing Buddy!

[JohanFroloff]

Why not make the clamp with one screw in the middle and make a detent in the big block, so it always sits straight. Does that make sense? saves time in the long run.

[bsf]

Much easier to just buzz off the dovetail in a second op. Only takes a minute, and much better finish too.

[davidforsyth]

in my head my order of ops would do the end face and curve first so the rest of the material is still max thickness, then drill the holes, then counterbores, then the body slot, then the outline, then the tabbing. and the tabbing would be a 3/16 endmill doing a 1/4" slot , refer Saunders "stop slotting the stupid way" (-: but maybe a 0.020" slitting saw would do a much better job of tabbing, much less cutting force?

[clayster]

I made the same tabbing mistake today. Part fell off, and I made that same face.
I also have found it is easier and more rigid to just hold onto a large amount of material and put it all the way into the vice so the part is straight and the setup will be more rigid. Then the order of operations is VERY important.

[CygnusRising]

In addition to not letting perfection get in the way of production, don't let perfection cause making mistakes to be this forbidden, awful things that you should never do.


You're going to have the greatest opportunity to learn from mistakes, and mistakes will ideally force you to evaluate how you can improve.

I struggle with perfectionism as well, and it -sucks-. Here's what I have to tell myself. You are not a failure; you have every right to be loading your code and hitting 'cycle start' on that machine; your failures now do not invalidate the progress you have already made in this and so many other ways; your failures do not imply that the product of your work will forever be terrible; it is worth trying again.

[ClockwerkIndustries]

Thats something I am all about, gratitude, not only grateful to work full time for myself and be able to pay the bills and continue to grow and need to upgrade my machines, but also that as brutal as it is sometimes, as a one-man operation I have worked every day of the quarantine so far, I have been getting twice my usual amount of orders and despite the shitstorm outside my house, I am grateful to have had so much support and had something to keep me occupied. Love these vlogs, I am working on getting my ass in gear to get out more content, realized its better to just get out videos and not stress about production, a lot of friends on my social media have told me to do this for a while and finally going to make a concerted effort to do it, these vlogs you have been doing inspired me to finally jump on it. Keep them coming!

[jimsvideos]

Embrace the gnarliness in that part John; it's a lesson learned and the part will still work just fine.

[bartharkemametalworks]

Thanks for sharing the good and the bad. It's part of learning and life. Its not about the end product, its about the process and how you deal with it. I think the quest for quality is more about the quest then about the quality. I like the shop life video's and the podcast is a inspiration. Thanks!

[raymondfrattone]

Hello John,
I have been retired foe a couple of years but I have been heavily involved with NC- CNC since 1964. I think you might want to look at five axis fixturing by LANG.I have used dovetailing for 30 years but how Lang does it is far superior.Idon't want to try explain how it works here but you do not need a machine to prepare the workpiece and it can be done in a few seconds. Also it eliminates the need for an end stop. I do not any connection with Lang.

[lichtyc]

I find what works best for tabs is if you want a .02" thick tab you don't want to cut your entire last pass to .02" and then cutout your tabs. Your last full pass should leave say .06" of material and then the last pass should be at full depth stepping up for your .02" tabs. That way you always have a thick cross section holding the material until the end mill is done the cut and out of the stock. Your tabs will hold the part from falling but you cannot rely on only .02" to hold the stock as you are doing a final pass. Also if you ever don't have the right dovetail with a 5 axis you can just use a regular end mill and tip your table over the 60 degrees. Enjoying these videos, thanks!

[RobertJLessard]

Really enjoying the vlogs and the sharing. Helps me get motivated in making parts. Still rocking my little tormach which I wouldn't have even heard about if it wasn't for you.

[ReiniGrauer]

Here is how you can part off the part from the stock without tabs and still let you do a finish pass on the part. You already have 2 countersunk holes for bolts on the part, add a couple more to the stock across from the parting groove. Make a little fixture jig with 4 threaded holes in it that can span the parting groove that conforms to the geometry of the part and the stock. Add a manual stop to the program right before you want run the parting groove, screw on your fixture jig and then go at it with whatever operations you need to finish off that last side. Although in a pallet changer situation, just return the pallet to the rack and add the fixture to the part while another part is running. Then there is no risk of flinging the part across the machine if the tabs are a little bit weak, and no second OP to finish the last side. This should work for most parts because almost everything is going to have a few holes in it to attach bolts. You could even add mitee bites or whatever to the fixture, and it shouldn't mess with the dimensions much. Basically like adding a second op fixture in the first operation.

[bugrobotics]

Thanks for sharing John. Jealous of that beautiful rig! When I grip a part like that and plan on tabbing it out, I'll start at the features furthest away from the dovetails and work my way back to ensure the rigidity is as high as it possibly can be. Sometimes this means taking some larger DOCs with small stepover so that the cutter is nicely loaded. Good luck and thanks again for sharing!

[trentray]

Machining’s a turf gig some days, I believe the tab was thin because the dove tails were cut while the part was crooked causing it to cut slightly deeper on one side

[kenmarapese]

Where the clamp contacts the blade a foot on each end will give two points of contact and increase it's stability.

[advil]

You'll wake up in the morning and feel better about it. You did finish your first part. Can't get better if you don't start somewhere. And as far as damaging something... lesson learned to be more smart and nothing at all was done to that machine except breaking a small end mill. Your tool holder and spindle probably didn't even feel that one. And you didn't hit the expensive vise! So all is awesome really. Carry on with the learning. How else can anyone learn a beast like that?

[tawharanui]

I love your work! Once, I have attended a course called ‘Do It Right The First Time‘. It never works in agile workflow processes!