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Old 09-25-2018, 12:04 PM
TimPa TimPa is offline
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Default collet capacity

one project I am planning would be using a tapered ball nose or square tip. I am looking for as long cutting length I can get. it appears that I max out in collet capacity first. what is the max dia for an ER32 collet? seems I am finding differing answers on line... thanks
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Old 09-25-2018, 01:23 PM
Jim_in_PA Jim_in_PA is offline
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I found this statement with a Google search from the MariTool site that I bought additional ER25 nuts from:

Quote:
ER32 series collets have a capacity of .02-.787 inches
So "effectively" 3/4" shank is up at the top if their statement is correct.
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Old 09-25-2018, 02:06 PM
Ger21 Ger21 is offline
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3/4" solid carbide bits are incredibly expensive.


What are you cutting? I've seen some really long bits for cutting foam.
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Old 09-26-2018, 12:56 PM
TimPa TimPa is offline
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it will be cutting hardwood. looking for tapered ball nose with 1 1/2"+ cutting length and a ~ 10 degree side taper. 3/4" is one limit I found. thanks
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Old 09-27-2018, 08:47 AM
sgodding sgodding is offline
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What size ballnose? There are lots of 1/8" tapered cutters with 1 1/2" cutting length, but they're usually 1 degree, not 10. Why do you need such an extreme taper? I've cut a lot of very hard hardwood with a BDP 1/8" and 1/4" ballnose (the 1/16" works fine too):

http://www.beckwithdecor.com/index_files/Cutters.htm

If you need a 1/2" ballnose, then the taper is a waste of money. A 1/2" ballnose is a tough bit. I use them for doors and run them pretty aggressively and have never broken one...dulled a lot of them, but never broken one.
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Last edited by sgodding; 09-27-2018 at 08:51 AM.
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Old 09-28-2018, 09:32 AM
TimPa TimPa is offline
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the project has tapered sides, and I thought that the tapered side of the cutter would provide step free surfaces. I will use a larger roughing out bit and finish with this one.
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Old 09-28-2018, 10:17 AM
Ger21 Ger21 is offline
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You could probably have one made for about $400-$500 with a 3/4" shank.
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Old 10-01-2018, 08:09 AM
TimPa TimPa is offline
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actually saw raised panel bit advertisement, and think one of those may work for this.
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