Why not just buy a set of 4 "pattern router bits". Longest one has 38mm cutting edge. You may still use guide bushings with them but optional since they have bearings.
Try the cheap set first then buy the expensive set.
Posts by reuelt
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Try the cheap set first then buy the expensive set.
Don't throw away any of your guide bushings.
For example, the famous European "Kitchen-Worktop jig" requires a 30mm OD guide bush and a 1/2" straight bit.
So you can use these with a 30mm OD guide bushing for that.
These pattern bits are also only available in 3/8" and 1/2" diameters. So when doing detailed engravings or in-lays with fine 1/8" or 1/16" bits, you will still need the smaller sized guide bushings.
Guide bushes are used with templates and jigs. Although commonly used with straight bits, guide-bushes are used with dove-tail bits, slot cutters, keyhole-cutters, V-bits, even plunge-type profile bits etc. all with the appropriate jigs.
On router tables (router mounted upside down) it is more convenient to use bits with bearings at the end rather than guide bushings so that you can see the template better when it is on top.
I will still use the guide bushes even if I invest in a pattern bit set.
Here's why
As you plunge, the bearing of the pattern bit may still high up and so the cutting edge could destroy your template.
So you need a pattern bit set. Use the short pattern bit first then change to a longer bit for more depth.
The guide bushing on the other hand will always protect the template from being accidentally cut and damaged.
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