Is way scraping information useful/interesting to you?

[ImanCarrot]

Poo, no info as of yet and it's been days. I'll find out from somewhere else. Usubscbrided from this this thread.

[allrounder]

Hi. I've been using a badly worn South Bend 9 inch lathe for 35 years. It won't fit on my milling machine, so I'd be very interested in resurfacing the ways with hand tools or a simple portable jig of some kind. It'd be great to find out how it can be done decently when only the bed ends would be unworn.

[voltsandbolts]

Nice!

This is a topic that’s been on my back burner for a long wile, always wanted to know more… Bring it on, I’m ready to soak it all in.

RobW

[pmx]

Hi,
just a basic info, to help some people to know what they will vote for

Scapping allows to make surfaces flat, with at surface finish that will help smooth operation, i.e. for lathe ways, etc...

Hand scraper - Wikipedia, the free encyclopedia

Surprisingly enough, hand scrapping allows a precision that can't be achieved by regular milling, and only by precision lapping, electrolytic methods, or "superfinishing". But for that, you need to move and clamp the "target" in the lapping machine.
In the other hand, hand scraping can be done "in place".
Achievable "roughness" (arithmetic mean) from 0.8µm to 0.2µm.

For hand scrapping, you need a control plate, or bluing plate, some marking blue (can be prussian blue artist oil paint), and an hand scrapper (a kind of chisel).
Also an ultra fine oil stone for honing the hand scrapper (unless it uses a carbide insert) and deburing the roughing passes.
An expensive alternative is the swiss made Biax electric scrapper tool.

A 7 parts video showing the whole process of machine tool ways scraping. Shows both hand scrapping tools and Biax scrapping

(link to the first video)

[nomedia="http://www.youtube.com/watch?v=90KpLbyvlPk&feature=mfu_in_order&playnext=1&videos=9lrzMjTRsR8"]YouTube - Scraping in a Myford MG12-M cylindrical grinder / part1[/nomedia]


Also a link to the "swiss scraping" method that uses a long scrapper hold over the shoulder. (I'm not the guy on the video, although it's name is Pierre, like mine )
Text is in French, but the movie is self explanatory !

[nomedia="http://www.youtube.com/watch?v=TFCVO0fXW1ka"]YouTube - Le grattage Ã* l'épaule[/nomedia]

Pierre.

[service_bb]

Way Scraping is what I specialize in

[BH_Nomad]

I am trying to teach myself scraping and I have made 3 12" straight edges out of HRS and am scraping two sides flat and also I cut up a old man hole cover and am am trying to make 3 90 deg angles. So all the help I can get would be good.

[austin.mn]

Although I did scraping for a while, I am a bit out of practice.... I would love to see a knee mill get redone and it would a great thread to have up.

[prasad]

I,d still like to know more through this .Because it is simply superb.Thanks.

[allrounder]

All ways are not always flat - some are inverted vees.

[old way scraper]

I,d still like to know more through this .Because it is simply superb.Thanks.

i could tell you step by step directions on how to way scrap a mill or any other machine, but without the right tools you are wasting your time. and everyone thinks that I can do this, its not that simply, takes years to get to the point of reading the high spots and the feel of the straight edge feel, to finish the way and having a way to check flatness and 90% to spindal etc.

[old way scraper]

well there is one person on this site that has a working knowledege of way scraping thank-you

Hi,
just a basic info, to help some people to know what they will vote for
Hand chisel, bull its a piece of carbide welded on to a scraper that then is sharpend by a diamond wheel the slip stone is to remover burs from way after scraping before you take a granite staight edge to recheck flatness Scapping allows to make surfaces flat, with at surface finish that will help smooth operation, i.e. for lathe ways, etc...

Hand scraper - Wikipedia, the free encyclopedia

Surprisingly enough, hand scrapping allows a precision that can't be achieved by regular milling, and only by precision lapping, electrolytic methods, or "superfinishing". But for that, you need to move and clamp the "target" in the lapping machine.
In the other hand, hand scraping can be done "in place".
Achievable "roughness" (arithmetic mean) from 0.8µm to 0.2µm.

For hand scrapping, you need a control plate, or bluing plate, some marking blue (can be prussian blue artist oil paint), and an hand scrapper (a kind of chisel).
Also an ultra fine oil stone for honing the hand scrapper (unless it uses a carbide insert) and deburing the roughing passes.
An expensive alternative is the swiss made Biax electric scrapper tool.

A 7 parts video showing the whole process of machine tool ways scraping. Shows both hand scrapping tools and Biax scrapping

(link to the first video)




Also a link to the "swiss scraping" method that uses a long scrapper hold over the shoulder. (I'm not the guy on the video, although it's name is Pierre, like mine )
Text is in French, but the movie is self explanatory !



Pierre.

[old way scraper]

Hi. I've been using a badly worn South Bend 9 inch lathe for 35 years. It won't fit on my milling machine, so I'd be very interested in resurfacing the ways with hand tools or a simple portable jig of some kind. It'd be great to find out how it can be done decently when only the bed ends would be unworn.

you got a way grinder? how about a 48" straight edge with 90% v certified double a or triple a man why not just buy a china hunk of junk they machine there ways
maybe i need to go back in this trade