Being relatively new at this I hope this isn't a completely dumb question (although I read somewhere in here when I registered that the only dumb question is the one not asked). I was looking into buying a set of brass guide bushings and noticed that on some of them the actual guides (the part that sticks out and actually follows the template) were all the same length and on others they some were longer. What is the reason for this? And is there an advantage to one or the other? Thanks in advance for the help.
Mike, I just found your question. I prefer the guide bushings that are slightly under 1/4" height for all in the set. They can be used with all templates 1/4" and thicker. Many sets have the longer lengths for larger sizes and this requires thicker templates. I can see no logical reason for this.
PC type guide bushings with a uniform across all sizes of 7/32 height are made by ShopFox and sold by Infinity among other places. For general use I fully agree with Mike there is no logical reason for the variable heights. Some templates, for example letter templates generally use longer lengths.
I have long been a proponent of the Oak-Park larger guide bushings, a subset of which is available from Lee Valley.
These guide bushings have a 1-1/2 incn through bore witha 1-3/4 inch counterbore and a uniform height of 1/4 inch.
I went over to the "Dark Side" (PC guide bushings)
when I found my Makita RT0701CX3 trim router could take only the PC style guide bushings. I still wish we had available much larger guide bushings when, for example we go router skiing. I am also looking for the thread in which Bobj3 showed a Oak-Park to PC adapter. The one advtnge of the ShopFox guide bushings over the Oak-Park style is the slightly shorter length.
I Want to Be the Person My Poodles Thought I Am The RouterForums member formerly known as mftha or th-alton
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