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where to buy 1/2" bore shaper cutters

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Forum topic by d_sinsley posted 08-22-2019 03:11 PM 300 views 1 time favorited 20 replies Add to Favorites Watch
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d_sinsley

85 posts in 35 days


08-22-2019 03:11 PM

So I purchased an old craftsman bench top shaper/router from a friend of my mom’s. I got it for a song and figured I would replace the router in my DIY router table with this machine. It takes 1/4 shank router bits and 1/2” bore shaper cutters. I see Grizzly and Amana make a selection of 1/2” bore cutters. Is there anyone else. Would be kinda nice to see the full potential of this little machine.

-- Devon


20 replies so far

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d_sinsley

85 posts in 35 days


#1 posted 08-22-2019 04:53 PM

And how bad of an idea would it be to use 3/4” bore cutters with a bushing? The Amana cutters are listed as 1/2 and 3/4” bore for the same part # so I assume they are doing just that, using a bushing. I haven’t looked but going with 3/4” bore cutters may give more options but also do want to be stupid.

-- Devon

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d_sinsley

85 posts in 35 days


#2 posted 08-22-2019 05:01 PM

Well I might have answered my question. Amana sells the bushings by themselves. So what remains a question is how safe is it to run 3/4” bore shaper cutters in this machine and will it ruin the machine by over working it.

-- Devon

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ibewjon

902 posts in 3272 days


#3 posted 08-22-2019 05:15 PM

With that machine, you will need to take it easy. I have heard of the shaft bending. Take light cuts.

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WoodenDreams

707 posts in 390 days


#4 posted 08-22-2019 05:16 PM

Also check out Frued shaper cutters

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MrRon

5659 posts in 3722 days


#5 posted 08-22-2019 05:19 PM

You can use the 3/4” bore cutters with a bushing, but I would not exceed the largest 1/2” bore cutter. Your shaper may not have enough power to swing a 3/4” cutter.

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d_sinsley

85 posts in 35 days


#6 posted 08-22-2019 06:51 PM



With that machine, you will need to take it easy. I have heard of the shaft bending. Take light cuts.

- ibewjon


It is a very light duty machine. So this is wise advice. Hence the question about 3/4” cutters. For the $25 I paid for it I think it will make a nice little router/shaper for my existing router table I made. The key I need to keep in mind is that even with this machine it is a router and not a shaper, and a light one at that.

Using the 3/4” cutters but keeping them to the same diameter as the 1/2” cutters is also good advice. Never considered the fact that larger diameter cutters require more to turn.

-- Devon

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ibewjon

902 posts in 3272 days


#7 posted 08-22-2019 07:05 PM

There is no rule that you gave to make the cut in one pass. Do it in two or three passes if needed.

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d_sinsley

85 posts in 35 days


#8 posted 08-22-2019 09:06 PM



There is no rule that you gave to make the cut in one pass. Do it in two or three passes if needed.

- ibewjon


I thought this went without saying. I almost never do any routing (or shaping when I have had the option) in one pass. I always take a few bites at it. Just the way i was taught.

-- Devon

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ibewjon

902 posts in 3272 days


#9 posted 08-22-2019 09:59 PM

I agree. You would think that, but not always. Enjoy the new toy..

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rickinbeachcrest

16 posts in 1961 days


#10 posted 08-22-2019 11:01 PM

Take a look at EagleAmerica.
https://www.eagleamerica.com/prod_detail_list/shaper_cutters

They are one of my regular places to buy router bits.

I have an old Craftsman shaper that I use now and then. Sometimes a shaper is just the right tool for the job. It has a 1/2” shaft. All my shaper bits are 3/4” with a bushing.

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d_sinsley

85 posts in 35 days


#11 posted 08-22-2019 11:21 PM

I have an old Craftsman shaper that I use now and then. Sometimes a shaper is just the right tool for the job. It has a 1/2” shaft. All my shaper bits are 3/4” with a bushing.

- rickinbeachcrest

good information. Thanks for the link and the first hand experience using the shaper with 3/4 cutters.

Just looked at the Eagle America and all of their shaper cutters are 3/4 bore and come with a bushing. So another great source.

-- Devon

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TungOil

1319 posts in 974 days


#12 posted 08-24-2019 11:55 AM

MLCS is another source for the smaller bore shaper cutters. Owned by the same outfit that owns eagle america (and penn state industries) but free shipping.

-- The optimist says "the glass is half full". The pessimist says "the glass is half empty". The engineer says "the glass is twice as big as it needs to be"

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poopiekat

4521 posts in 4213 days


#13 posted 08-24-2019 02:11 PM

I’ve used Corob cutters for years on an old Black and Decker 1/2” spindle shaper. I was surprised that they still sell them!

http://corobcutters.com/shapercutters.aspx

I’ve used bigger shaper heads on it with reducing bushings, but the vibrations made it too scary to run, even at 7000 RPM.

-- Einstein: "The intuitive mind is a sacred gift, and the rational mind is a faithful servant. We have created a society that honors the servant and has forgotten the gift." I'm Poopiekat!!

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d_sinsley

85 posts in 35 days


#14 posted 08-26-2019 02:27 AM

Are the Corob cutters like a regular shaper cutter or are they meant to be attached to something else? They look to me like they are k ife sets for a molding head cutter like the craftsman and others that are made to go on a table saw. If that’s the case that’s not what I was asking about BUT I also have one of those cutter heads and this is still a great source.

-- Devon

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poopiekat

4521 posts in 4213 days


#15 posted 08-26-2019 02:53 AM


Are the Corob cutters like a regular shaper cutter or are they meant to be attached to something else? They look to me like they are k ife sets for a molding head cutter like the craftsman and others that are made to go on a table saw. If that s the case that s not what I was asking about BUT I also have one of those cutter heads and this is still a great source.

- d_sinsley


Good question!! Unfortunately the catalog only shows the cutters in profile. They are round three-wing cutters (typically) and fit over a 1/2” spindle. If you are not in possession of a 1/2” Spindle shaper, but have a router table, you can get a 1/2” X 20 threaded adapter for your 1/2” router, and put the Corob bit on. No, these are not inserts for a table saw. I’d never use those in a shop environment! But the Corob bits helped me out of many a jam in my early woodworking days, until better tooling came into my possession.

Pictured is a adapter to turn a 1/2” router into a spindle shaper…. from Grizzly but other dealers have an equivalent in their catalogs.

-- Einstein: "The intuitive mind is a sacred gift, and the rational mind is a faithful servant. We have created a society that honors the servant and has forgotten the gift." I'm Poopiekat!!

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