Member postings for blowlamp

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

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Thread: Tool tips
20/10/2010 09:33:17
I believe the 5 degree figure is from a 1988 copy of Know Your Lathe.
I attach a screenshot of the relevent page.
 
Martin.

19/10/2010 23:51:21
And to cap it all, Boxford say that for plain external turning, the correct tool height is 5 degrees above centre height. Presumably to ensure a positive thrust against the cross slide feedscrew and thus prevent any tendency for the tool to be drawn into the workpiece.
 
Martin
Thread: Simpler the Better -what do you use?
18/10/2010 22:20:35
Just to add a little more meat to the bones of my previous post.
I find that ViaCAD has really good, clean DXF and STL file exports, which makes life so much easier when working with a CAM system (in my case, the mighty CamBam).
If you only want to work in 2D, then 1 click on an icon and all the 3D related stuff is taken offscreen - another click and it's back. Very simple and effective, particularly for newcomers, which I think is what the original poster was looking for.
 
Martin.
18/10/2010 14:26:23
Anyone looking for an easy to use CAD system should cast an eye over the ViaCAD range of products. I've been using ViaCAD Pro for a couple of years now and find it to be exceptional in its drawing and file sharing capabilities.
Rather than me try to list its functions I'll just include a link.  http://www.punchcad.com/full_store.html prices start at less than US $50 or £32.
 
Martin.
Thread: Hints and tips
18/10/2010 11:02:09
Greetings all.
 
Well I don't know how most of you have been using your calculators to convert fractions to decimal, but up until quite recently I've used a pointless and slightly long-winded approach.
 
To use an example of let us say 17/32, I've been dividing 1 by 32 and then multipling by 17 to achieve the answer of 0.53125, which is of course correct... I'm sure some of you are laughing already.
 
However, I 'discovered' that dividing 17 by 32 also gives... 0.53125. So just enter the fraction into your calculator literally as it is written and it works for any fraction, no matter how bizarre, such as 21/89 = 0.23595... or even 89/21 = 4.238095...
 
It's still not obvious to me why I've been doing it this way for so long, because I know that 1/4 = 0.25 and that 1/2 = 0.5 and so would never dream of employing the first method to work out these examples, but then maths never was one of my strengths. The main thing is that it saves a few seconds and slightly reduces the chances of making a mistake in the calculation. 
 
I hope it helps some of you.
 
Martin.
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