Thread: 5th and final Melbourne Au Scraping Class.

Here's mine. Some astute observers might notice after a few minutes of comparing my block to Grunto's that my table is not as clean.

P1016164-1600.jpg

Some of the guys may not be on the forum and as usual I have no idea (well maybe a little) of your names.
Feel free to add your name should you desire. Great day as usual with many thanks to Phil for allowing me to pop over and take some pics seeing I was in the area.
Marko was his ebullient self and didn't stop all day.

Phil
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Some more.
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How come you guys finished it it one day?????

1 day? - no way!

Still more.
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And the last lot.
Enjoy guys.

Phil
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Originally Posted by eskimo

How come you guys finished it it one day?????

These guys were twice as fast as you were.
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Different gig this time. It was a Friday & Saturday event. I get the impression they couldn't afford the over time for a Sunday. (Further Joke).

Who was it that pulled this stunt off? Not bad for 5 minutes into it.
https://www.woodworkforums.com/attach...7&d=1422094842


Phil.

Originally Posted by Diomedes

Here's mine. Some astute observers might notice after a few minutes of comparing my block to Grunto's that my table is not as clean.

P1016164-1600.jpg

What is the go with the four dots? One in each corner?

Originally Posted by Machtool

These guys were twice as fast as you were.
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Phil.

I initially thought it was because the blocks were square and true to begin with....

Hi all,

I mentioned this guy yesterday, seems to know a bit

Pretty good explanation of why you might scrape something, I think I'll make it required viewing for certain persons who couldn't understand why I'd spend two days making a block of iron more or less square

That is apart from two days of gourmet pigging out on Phil's provisions

Any way have a look at https://www.youtube.com/watch?v=cwdoUjynpEk

Must be the US equivalent (well as near as they can get) to Marko, though we all know he be can't be beat

Bit about D G here

http://graduation.ubc.ca/event/honor...aniel-gelbart/

There a fair bit of info about him available via google, looks he made a couple of bob out of engineering along the way

P.S. the rest of his utube series is pretty informative

Originally Posted by DSEL74

What is the go with the four dots? One in each corner?

I couldn't justify buying a full lenght bar of the right material, for the few blocks we needed. But I had some 32 x 108 bar. So I machined that all over, bolted and glued 2 peices together. There was 3 blocks like that.

Thats Devcon covering the S.H.C.S heads.

Regards Phil.

Originally Posted by johntopp

Any way have a look at https://www.youtube.com/watch?v=cwdoUjynpEk

Thanks for linking to that, I think I'll need to watch that a few times.

Ray

Relevant to the course - stiffness

I have plenty of that today after two big days of benchwork and weightlifting

Scraping has a strange effect on density of material, the more you scrape the heavier the workpiece gets

The first bit of this video (maybe first 4 minutes) has relevance to macine bed rigidity - I guess you need to be careful how much you remove lest you affect the stiffness - I think is a fourth power relationship, dimension to stiffness

https://www.youtube.com/watch?v=MtxA20Q-Uss