All kidding aside there is a difference especially when using them on hard granite. The 3 inch diamonds are going to cut faster since there is greater PSI with a three inch than there is with the 4 inch.  To understand this concept picture a chair with four legs. each leg is 1 square inch. Now place 200 lbs on the chair..You are exerting a pressure of 50 PSI..Now balance the chair on two legs with the same 200 lbs..You just doubled the PSI by reducing the number or square inches of diamonds.<br>
<br><div class="gmail_quote">On Sun, Jul 15, 2012 at 1:10 AM, Freddie DeJesus <span dir="ltr">&lt;<a target="_top" href="mailto:info@eliteflooringandrefinishing.com" target="_blank">info@eliteflooringandrefinishing.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><p>Thanks</p><div class="HOEnZb"><div class="h5">
<div class="gmail_quote">On Jul 14, 2012 10:52 PM, &quot;Michael Marsoun&quot; &lt;<a target="_top" href="mailto:nulifesc@bigpond.com" target="_blank">nulifesc@bigpond.com</a>&gt; wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

<div bgcolor="#FFFFFF"><div>It would be more surface area which would require more down pressure. You can save money by getting the 4&quot; then cut them in half and you need half as many and a 4&quot; half is very close to a full 3&quot;.  <br>

<br>Sent from my iPhone</div><div><br>On 15/07/2012, at 3:43 AM, Freddie DeJesus &lt;<a target="_top" href="mailto:info@eliteflooringandrefinishing.com" target="_blank">info@eliteflooringandrefinishing.com</a>&gt; wrote:<br><br></div>
<div>
</div><blockquote type="cite"><div><div> </div><div>Partners,</div><div><br clear="all">What is the differance between a 3&quot; or 4&quot; pad for grinding and Honing?<br>-- <br></div><div>Wilfredo DeJesus</div><div><a target="_top" href="tel:561-350-3076" value="+15613503076" target="_blank">561-350-3076</a></div>

<div>Elite Flooring Inc.</div>
<div>Website / <a target="_top" href="http://www.eliteflooringandrefinishing.com" target="_blank">www.eliteflooringandrefinishing.com</a></div><br>
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</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><img src="http://www.stoneforensics.com/stone-detective.png" width="200" height="129"><div>Frederick M. Hueston PhD<br><a target="_top" href="http://www.stoneforensics.com" target="_blank">www.stoneforensics.com</a><br>
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<div><br></div><div><div><div>Many of my articles can be found at <a target="_top" href="http://www.stoneandtilepros.com" target="_blank">www.stoneandtilepros.com</a></div><div>Listen to my radio show   <a target="_top" href="http://www.blogtalkradio.com/drfred" target="_blank">www.blogtalkradio.com/drfred</a></div>
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