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Opinions needed on circle cutter design
http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=48860
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Author:  Chris Ensor [ Sun Jan 15, 2017 4:50 pm ]
Post subject:  Opinions needed on circle cutter design

I am working on developing a precision circle cutter. It will be able to cut tiny circles all the way up to circles large enough to make a radius dish. Here is where I need your opinion:

Option 1: The jig is predrilled for a couple of common laminate trimmers.
Option 2: Leave it blank so the end user can choose which laminate trimmer/router they want to use. This would require the end user to drill aluminum and clean off any burrs, but would allow the user to pick any router (up to a certain size) including a plunge router of their liking.

Thanks in advance for your opinions.

Author:  Dave Rickard [ Sun Jan 15, 2017 5:23 pm ]
Post subject:  Re: Opinions needed on circle cutter design

Option 2, that way if it doesn't fit it's on me.
Seems it would make it easier on you also.

Author:  wbergman [ Sun Jan 15, 2017 5:36 pm ]
Post subject:  Re: Opinions needed on circle cutter design

Do not use HDPE. Following directions threading with a tap, the screws just pull right trough.

Author:  truckjohn [ Sun Jan 15, 2017 6:55 pm ]
Post subject:  Re: Opinions needed on circle cutter design

Just a comment....

Generally an "it does everything" sort of tool does one thing really well - but other things poorly.... Though it theoretically does them. For example... I don't really want a big fat 12" or 16" jig when I am cutting rosettes....

On the router base question. If you already know patterns for some common ones - then put them in. A few extra holes on the CNC basically costs nothing.

Thanks.

Author:  Duct Tape [ Tue Jan 17, 2017 9:41 pm ]
Post subject:  Re: Opinions needed on circle cutter design

My choice would be a choice of three options, 1. Colt, 2. Another popular trimmer such as DeWalt, Rigid, or Makita, and 3. No holes, tap your own.

Agree w above to make it best for small work. Most of us already have a larger circle cutting jig for larger work such as radius dishes, etc where slight variations in measurement aren't as critical.

Author:  James Orr [ Tue Jan 17, 2017 11:18 pm ]
Post subject:  Re: Opinions needed on circle cutter design

It would sure be nice to have it pre-drilled and just have to plop my trimmer down, but pre-drilling for a number of set options could make it look like swiss cheese.

Author:  truckjohn [ Thu Jan 19, 2017 3:28 pm ]
Post subject:  Re: Opinions needed on circle cutter design

So.. For just pure mass market appeal....

I would either put holes in it for all of them or for none.

This way - you don't have to get into keeping stock for 5 different models where the ONE difference was the countersunk holes for mounting the laminate trimmer.... You don't have to guess which one sells like hot cakes and which one doesn't.

If you want to do a "specific model" base with only one set of holes - leave them blank and then drill and c-bore at the time of sale....

In that case - be sure you have a good template you can use to match drill the holes.

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