Bending handbook was:tight radius bends in conduit

Always wondered how tubes were bent using mandrels - fascinating! Thanks!

I may play with resizing those images, saving them as PDF, and combining them into a single document, simply because one doc is easier to read and navigate than a bunch of jpegs. If I do (probably "when I do") do you want me to make it available or would you rather I sent it to you to let you make it available?

GWE

It makes about a 6 meg PDF file.

combining them

Feel free to repost anywhere and in any format. I was thinking of trying that, but I don't have the software to convert to PDF (except for Photoshop 7.1)

I have some other handbooks I may scan and post sometime.

National Polyethylene Pipe/PVC Pipe Pipe Threading Principles Copper Tube Handbook Imperial Tube Working Handbook

I'll try and remember to rescan that one distorted page, too...

I'd retype the text and then capture the images out of the document and that will shrink the file size a lot. I'll take my standard lecture on JPG vs. GIF. JPG is for images of scenery and so forth. It does sublte things on an image with more changes to the image as the compression level increases. The worst thing to compress with this format is text as the frequency response is extremely high for this and that means that the image doesn't get as compressed as otherwise. GIF is for graphics images. It doesn't reduce the information in the image but rather just uses techniques to reduce the amount of redundancey in an image's file. GIF also has the ability to use less bits per pixel than JPG does which in itself reduces the amount of information that needs to be compressed which is a compression in itself. Reducing the colors to B&W, reducing the size of the image (the text is ratehr large), and then using the GIF format should reduce the size of the images to under 100K Much better tho would be to convert the image to text where possible and then add in the images as necessary. This will reduce the size of the file (even if it is a PDF) to a fairly small size.

-- Why do penguins walk so far to get to their nesting grounds?

Scan10079.JPG is the one. Thanks, Rick.

Thanks a lot for the scans!

Now I know that I've built a mandel-type bender like in fig. 8 or 10. Only the form of the mandrel (fig. 10) is different to mine. I can bend a brass tube (annealed) 6mm diam. and 0,5 mm wall thickness wit R=1D 180 degrees. If you messure the diameter in the bending area, it is just

0,2..0,3mm below 6mm. No scrathes, no dents, no warping. Took me a week and two prototypes that went into the bin. People who saw the bends didn't belive.

Nick

Why not use optical character recognition? I just finished converting a

10 meg scanned document into a 1 meg PDF which is also searchable. It wasn't easy workign around the figures, but it beat the pants off retyping the whole thing.

Doug White

Great!!! I already took a few pages to work to pass around the lunch table... Wrinkle bending is pretty straightforward and in steel can be done with a lot less setup than shown. Thank you. Randy

Done....

Great. Um, what was the URL again? (You now see why I had quoted it in my reply.)

Here ya go. Glad a few of you enjoyed the post!

Danke.