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Member postings for jacques maurel

Here is a list of all the postings jacques maurel has made in our forums. Click on a thread name to jump to the thread.

Thread: How to drill a square hole?
02/09/2010 22:24:13
I've turned the solid of equal width between centers, the process is thoroughly discribed in ME N°4285.
18/08/2010 15:01:26
For polygon drilling, there isn't any problem of "chicken and egg" as the guide can be made in 2 parts assembled together. Nevertheless this process needs tooling (floating toolholder, guide, drill) and it's difficult to get an accurate dimension for the hole.I've made it to amaze my students, and to have a good floating toolholder for my reamers. The rotary broaching process is not easy too (rotating toolholder) the adjustment of the toolbit is described in a video on "youtube" it's not an easy task for a one off job. While you have made the tool bit, it's easier to strike it ( see ME N°4310).
17/08/2010 15:56:22
Please use the little button above with the Word logo on it.
Third from right.
This should convert from Word to text when you paste it.
regards david

Edited By David Clark 1 on 17/08/2010 17:10:33

Thread: unable to add new postings
15/08/2010 08:42:01
normal post

Edited By David Clark 1 on 17/08/2010 14:50:11

Thread: induction heating
15/08/2010 08:36:08
I'm interested too, but not keen in electronics, is it possible to use a high frequency generator borrowed from an inverter arc welder?
Thread: How to drill a square hole?
12/08/2010 18:00:30
Corrected post

Edited By David Clark 1 on 17/08/2010 15:19:50

09/08/2010 22:30:56
Look at my articles in model engineer: N°4285 page 493 for square hole drilling, I've also made un attachment for hexagon hole drilling, the process is slightly different, you can get sharp edges, the drill is not a solid of equal width. Ask the editor to contact me if you want a short artilcle about this  subject in the magazine. The main interest of the article (about square hole drilling) is the description of a floating tool holder very usefull for reamer holding. The second article is in ME N° 4310 p 432 about polygonal punching tools, this way is I think more convinient for small dimensions. I've put many videos on youtube, just tap "square hole drilling or hexagon hole drilling. Visit my website: jacques
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