I see the post? http://www.cnczone.com/forums/showth...349#post349349
I received a notification via email for a post in a thread I am subscribed to. I’ve just looked at the thread but that post is not there; any idea what’s going on?
Copy of email
Hello Oldmanandhistoy, Belding has just replied to a thread you have subscribed to entitled - Bringing the Art of Scraping into the 21st Century? - in the Linear Motion forum of CNCzone.com-The Ultimate Machinist Community. This thread is located at:Bringing the Art of Scraping into the 21st Century? Here is the message that has just been posted:***************I have just read through this thread and have a few things to say. I recently spent almost a year of my life building a small CNC milling table. All slide bearing sufaces were scraped. I purchased a book and video on the scraping process, which I would recomend to anyone. http://www.machinerepair.com. In no way would I consider myself an expert on scraping, but I would like to share what I know. There are two "modes" of scraping, roughing and finishing. In the roughing mode you are just trying to romove material to restore alignment and to get the surface "close". In roughing, a slightly thicker film of blueing is used on the surface plate. As Ian mentioned, cuts should be made at 45 degrees to the direction of travel. A cut refers to rows of individual strokes side by side. In roughing strokes can be long(1/2 inch or so). In finishing, strokes lengths are reduced to 1/4-1/8". A lighter blueing film must be used when finishing. Otherwise, the layout fluid will sqeeze into the low spots and give a false reading. When finish scraping lighter downpressure is used. Between each cut, the surface is usually deburred with a medium to fine stone. This levels off the peaks and gives the suface its final contact area. The cutting action down with the hand stone is different than that of a surface grinder. It is done at a much slower rate always in the direction of travel. This minimizes the "ploughing" action. Scraping is just a refinment of the original bearing surface. Determining when to stop is aplication dependant. Zac*************** There may be other replies also, but you will not receive any more notifications until you visit the forum again. DO NOT REPLY TO THIS EMAIL, PLEASE VISIT THE FORUM, USING THE LINK ABOVE. Yours,CNCzone.com-The Ultimate Machinist Community team
The post was definitely not there when I posted here. I have now received another identical email and the post is now as it should be.
Very strange, I have just checked “Todays posts” as I did earlier and the post is now in the list with a time a few seconds before I received the first email. The second email (identical other than the time) I received at 13.23.GMT.
And I was thinking I had lost the plot