Excellent! I just today attempted my first metal scraping job with an Anderson hand scraper. I should have watched this video first. Thank you for sharing your expertise. You are very precise and exacting and set a good example.
The fact that the bed is hardened isn't really a problem. It only takes longer. :-) It required carbide blades. To scrap a bed can be a huge pain! Most people forget, that there is -often enough- a guide on the underside. And this guide is hard to impossible to reach! But it depends on the construction of the bed.
You push quite soft. Especially with the material in this video (it is some kind of resin) you just -more or less- rest your left arm on the scraper. I prefer to push. Rarely use the pulling technique, but you have to hold the scraper completely different. Will post a new video this month with the BIAX on my Myford MG12 cylindrical grinder (1961) Scraping can be learned, but someone has to show it to you. Thanks to all for their comments!
Was something playing in the radio. The band's name is "Wolke", a German band. I don't know the title, seems to be from their 3rd album, as the narrator told.
Sorry for the later answer! The resin used in this video is "MultiMetall steel". It is a steel-filled resin. Not suitable for bearing surfaces, but perfect for fitting surfaces that have to be scraped. There's an other product from the "Moglice-company" (where that Multimetall is from) that is called "DWH". Also perfect for fitting surfaces, but it can't be scraped. At least you get a bad surface when scraping. DWH is perfect when you can align a part and then cast that resin.
Hi Lathe beds (in fact most of the castings) are iron, iron is very soft compared to most steels but i know that scraping in a bed is a job not for the faint hearted!! My little faircut machine has wear at the headstock end and it's a dovetail bed, i'm loathe to have a go myself but i don't know of any companies that undertake this type of work these days.. I used to work in a machine shop years ago and can remember that on a regular basis,the machines were stripped and scraped in thanks...
Yes, sure. You can align geometry. That is the main purpose beside getting a flat surface. But obviously, the adjustment can just be within limits. 0.1 mm is something not uncommon. Correcting 1 mm will be more work.
Grrrr ... that typo again! It's scape, not scrap (I'm German so this is a valid excuse). You don't start at large areas, you only scrape high spots. If you acquired the skill of building a map of high areas, you can scrape areas in the beginning. But the further the progress, the smaller the areas will be until you work on spots only.
Thanks for posting this. I've read about scraping, but actually seeing it done makes a huge difference.
Excellent! I just today attempted my first metal scraping job with an Anderson hand scraper. I should have watched this video first. Thank you for sharing your expertise. You are very precise and exacting and set a good example.
Vraiment passionnant! Je ne me suis endormi que deux fois...
Patience Is A Virtue. Good job! 100%
The fact that the bed is hardened isn't really a problem. It only takes longer. :-) It required carbide blades.
To scrap a bed can be a huge pain! Most people forget, that there is -often enough- a guide on the underside. And this guide is hard to impossible to reach! But it depends on the construction of the bed.
You push quite soft. Especially with the material in this video (it is some kind of resin) you just -more or less- rest your left arm on the scraper.
I prefer to push. Rarely use the pulling technique, but you have to hold the scraper completely different.
Will post a new video this month with the BIAX on my Myford MG12 cylindrical grinder (1961)
Scraping can be learned, but someone has to show it to you.
Thanks to all for their comments!
Was something playing in the radio. The band's name is "Wolke", a German band. I don't know the title, seems to be from their 3rd album, as the narrator told.
Sorry for the later answer!
The resin used in this video is "MultiMetall steel". It is a steel-filled resin. Not suitable for bearing surfaces, but perfect for fitting surfaces that have to be scraped.
There's an other product from the "Moglice-company" (where that Multimetall is from) that is called "DWH". Also perfect for fitting surfaces, but it can't be scraped. At least you get a bad surface when scraping. DWH is perfect when you can align a part and then cast that resin.
Hi
Lathe beds (in fact most of the castings) are iron, iron is very soft compared to most steels but i know that scraping in a bed is a job not for the faint hearted!!
My little faircut machine has wear at the headstock end and it's a dovetail bed, i'm loathe to have a go myself but i don't know of any companies that undertake this type of work these days..
I used to work in a machine shop years ago and can remember that on a regular basis,the machines were stripped and scraped in
thanks...
So, you can change geometry of a part by scraping? Not only make flat or bearing?
Yes, sure. You can align geometry. That is the main purpose beside getting a flat surface. But obviously, the adjustment can just be within limits. 0.1 mm is something not uncommon. Correcting 1 mm will be more work.
Grrrr ... that typo again! It's scape, not scrap (I'm German so this is a valid excuse).
You don't start at large areas, you only scrape high spots. If you acquired the skill of building a map of high areas, you can scrape areas in the beginning. But the further the progress, the smaller the areas will be until you work on spots only.
Haha thanks.
what is the song at 2:38?
scraping is fun!! LOL!!
Maybe you just don't know how a bed's gap looks like and what a "fitting surface" is?