Re: [ATM] no to beeswax!

[Mike Lockwood <melockwo@uiuc.edu>]

Hi,

Vladimir Galogaza wrote:
> Mike,
>>Cut deeper channels in the center than the edge.
> 
> It escapes me how the channel depth may influence anything?
> Any additional explanation ?

I thought we were talking about a normal pitch lap, but apparently 
it's got beeswax on it.

I thought the goal was to make the lap act harder at the edge, and 
softer in the center.

For a pure pitch lap that is fairly thick (1/4" - 3/8"), cutting 
deeper channels makes the pitch act softer.  Shallower channels make 
it act harder.  So, cut deeper channels in the pitch in the center of 
the lap to make it act softer there, and shallow channels at the edge 
to make it act harder.

I have done this to change the hardness of an ENTIRE lap, but I have 
never varied the channel depth as a function of radius.

	Mike Lockwood


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