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| Drilling a square hole | |
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| Tweet Topic Started: Wednesday Oct 12 2011, 05:28 PM (628 Views) | |
| skling | Wednesday Oct 12 2011, 05:28 PM Post #1 |
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Addictive Poster
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Can you figure out how its done? |
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| skling | Wednesday Oct 12 2011, 05:56 PM Post #2 |
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sorry for the double posting. This post actually include a video clip to prove it can be done, then you figure out how it's done. Unfortunately the clip just wouldn't get attached in spite of my repeated efforts. |
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| Joyce Wong | Wednesday Oct 12 2011, 11:20 PM Post #3 |
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Administrator
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Mr ling, Please paste the url here, i will edit the posting for you Joyce |
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| anghweebeng | Friday Oct 14 2011, 05:08 PM Post #4 |
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Done that during my school days. It is something called the mortiser. Basically, it is a hollow square and heavy duty tube with the bottom edges sharpened, inside the hollow is a drill bit that will actually do the drilling. As pressure is added, the sharp edges, bevelled on the inside of the tube, will sort of push the wood towards the drill bit. At two upper sides of the tube are two open slots for the waste material to 'exhaust' out. There are various sizes to suit. H B Ang. |
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| skling | Friday Oct 14 2011, 07:26 PM Post #5 |
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Hi Joyce, its a wmv file, not an address. l shall try again to attach this file. Hi Ang, thanks for your detailed explanation. l'm not too sure if it works the same. Take a look at it if l managed to attached this file. |
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| anghweebeng | Saturday Oct 15 2011, 04:01 PM Post #6 |
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Wow! That is cool. Drilling metal! Now we can have metal firewall, mmm, on second thought, no. H B Ang. |
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