Flaking is done to help in oil retention and this BIAX machine is designed to make the half-moons which is supposedly the best pattern. Richard (King) explained it in class by doing a straght line across the part with a normal blade, then the half-moon aisde this and asked which we thought would make the oil flow fastest through. As to whether just the scraping is sufficient, he also referred to a test done his father with 2 newly scrape-finished similar machines (Bridgeports) being run aside each other on the same job. Only one was flaked, and this lasted much longer..
Very cool. I was reading some tribology and thought the extra pockets might induce some sort of viscous drag or something. Not to pretend that I know what I'm talking about but something I'd like to test once I start doing my own scraping. Excellent videos. The end result would be amazing.
I always come back to your videos. I might have posted this before on one of your videos but what the hell, I'll do it again. My old boss (job shop) had a sign on the wall I always thought was hilarious yet so true. It read "If you don't know what lever A is then leaver B." I don't know how many people came through the shop and would just start touching and turning controls on machinery that was sitting for no reason other than idle curiosity I suppose.
Sorry for the delayed response to your comment!Not sure how this relates to the use of the flaker, but yes, investigative human nature sometimes gets you into trouble with machinery.. "It wasn't me" :)
hla....Scrapings pocket depth is on average .0003" deep and flaking is .002" deep so the this is why we flake . 50% of the short side or unexposed surface retains more oil longer as the machine wears. Many 1/2 moon flake the exposed side, but in my opinion it lets contamination into the way system. It looks pretty and does help the way to retain the oil longer. If you do not clean the surface it will let in contamination.
Does flaking really help with oil retention? I don't think it would have any measurable effect one way or the other. More than enough oil is retained on a plain scraped surface so flaking is unlikely to improve anything. What do you think Jan Sverre?
Apparantly I have missed some comments.. sorry! Not that I would have an definitive answer, but I will try to speak/practise what I ahve learned. The flaking you do, best on the unexposed surface, is supposedly to help to retain oil better than a regular scraped (or by other means flattened surface with "way grade" finish/roughness). This is because the oil will have deeper pockets/longer ways to travel to get away under pressure
The flaking should aslways be done on the top side of the two surfaces. On the bottom they can act as grit catchers. The half moon that the Biax does is also possible to do by hand using the same rocking motion. Tougher to learn than the near vertical impact method.
Agree. This is also what we have been taught, namely to flake the "unexposed" side of a machine tool. Which of course would leave you to wonder why the Bridgeports were flaked on top of the table ways.. just for aesthetics I presume, but they must collect dirt so more important to clean the ways and maintain the way wipers in good condition..Thanks for the comment on the half moon with the hand motion.. I have tried, but it sure seems harder to learn. Any suggestions to master this?
Flaking is done to help in oil retention and this BIAX machine is designed to make the half-moons which is supposedly the best pattern. Richard (King) explained it in class by doing a straght line across the part with a normal blade, then the half-moon aisde this and asked which we thought would make the oil flow fastest through. As to whether just the scraping is sufficient, he also referred to a test done his father with 2 newly scrape-finished similar machines (Bridgeports) being run aside each other on the same job. Only one was flaked, and this lasted much longer..
Very cool. I was reading some tribology and thought the extra pockets might induce some sort of viscous drag or something. Not to pretend that I know what I'm talking about but something I'd like to test once I start doing my own scraping.
Excellent videos. The end result would be amazing.
I always come back to your videos. I might have posted this before on one of your videos but what the hell, I'll do it again. My old boss (job shop) had a sign on the wall I always thought was hilarious yet so true. It read "If you don't know what lever A is then leaver B." I don't know how many people came through the shop and would just start touching and turning controls on machinery that was sitting for no reason other than idle curiosity I suppose.
Sorry for the delayed response to your comment!Not sure how this relates to the use of the flaker, but yes, investigative human nature sometimes gets you into trouble with machinery.. "It wasn't me" :)
hla....Scrapings pocket depth is on average .0003" deep and flaking is .002" deep so the this is why we flake . 50% of the short side or unexposed surface retains more oil longer as the machine wears. Many 1/2 moon flake the exposed side, but in my opinion it lets contamination into the way system. It looks pretty and does help the way to retain the oil longer. If you do not clean the surface it will let in contamination.
Nice one . 👍
Thnks
Great video...
Looking at practicing some scraping soon...
Cheers,
Dave
Does flaking really help with oil retention? I don't think it would have any measurable effect one way or the other. More than enough oil is retained on a plain scraped surface so flaking is unlikely to improve anything. What do you think Jan Sverre?
Apparantly I have missed some comments.. sorry! Not that I would have an definitive answer, but I will try to speak/practise what I ahve learned. The flaking you do, best on the unexposed surface, is supposedly to help to retain oil better than a regular scraped (or by other means flattened surface with "way grade" finish/roughness). This is because the oil will have deeper pockets/longer ways to travel to get away under pressure
The flaking should aslways be done on the top side of the two surfaces. On the bottom they can act as grit catchers. The half moon that the Biax does is also possible to do by hand using the same rocking motion. Tougher to learn than the near vertical impact method.
Agree. This is also what we have been taught, namely to flake the "unexposed" side of a machine tool. Which of course would leave you to wonder why the Bridgeports were flaked on top of the table ways.. just for aesthetics I presume, but they must collect dirt so more important to clean the ways and maintain the way wipers in good condition..Thanks for the comment on the half moon with the hand motion.. I have tried, but it sure seems harder to learn. Any suggestions to master this?
OK. Well, Turkey is a bit far to go from here in Scandinavia..
But, there are scraping classes in the USA at a regular basis
That's even farther :)
I'll stick to UA-cam.
Nice video. is it stanko 1i611p lathe on the background?
thnks. yes, it is
when you start a line, it seems like the tool has an engagement or something....whats going on there(mechanically)?
You push the tool forward and the mechanism engages and moves the tool sideways in a rocking movement around the central shaft
@@jansverrehaugjord9934 oh cool, so it a clutch. man am I jealous of that power flaker, thanks for the insight into how it works.
@@mtraven23 Not exactly sure how it looks inside but it functions very well indeed. I bought my machine from a retired professional "scraper hand"
hla27b.. where are you located?
Istanbul Turkey
hla27b Hi there,I was at work in Istanbul (Tuzla actually) last week. Very nice city!Really good food..