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post #1 of 12 Old 06-25-2017, 10:20 PM Thread Starter
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help with a shaper table

Hi I have a delta shaper and wanted to cut some casing with a cutter head and profile knife my question is I only have a 1/2 and 3/4 spindle and I can only seem to find 2inch cutter heads for the 3/4 spindle and I need 3 inch casing can I put 3inch knives in a 2in head and leave a half inch out the top and bottom? Or is this a recipe for disaster?
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post #2 of 12 Old 06-25-2017, 10:59 PM
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I don't think so....

It's probably been done, but I would check with Grizzly techs before doing so. This 3" moulding head has a 1" bore and is used with a 4" spindle on larger machines.

http://www.grizzly.com/products/3-Mo...h-1-Bore/D1701

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post #3 of 12 Old 06-25-2017, 11:13 PM
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Originally Posted by Bjs1991 View Post
Hi I have a delta shaper and wanted to cut some casing with a cutter head and profile knife my question is I only have a 1/2 and 3/4 spindle and I can only seem to find 2inch cutter heads for the 3/4 spindle and I need 3 inch casing can I put 3inch knives in a 2in head and leave a half inch out the top and bottom? Or is this a recipe for disaster?
It would depend on how thick the knife steel is. If you are using 1/8" thick knives I wouldn't do it but 1/4" thick or more would work. 1/8" knife steel is pretty easily broken. Now having said that with casing you don't have that much steel protruding from the head so don't exceed the limits of the head with another profile that the knives do protrude a lot.

There is also a reason you don't find larger shaper heads to fit that small of a shaft. It's so hard to get the head and knives balanced the least little thing goes wrong and it bends the spindle.

Last edited by Steve Neul; 06-25-2017 at 11:17 PM.
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post #4 of 12 Old 06-26-2017, 09:20 AM Thread Starter
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Thanks for the responses very helpful I guess I'll give it a try seeing as a 1" dia delta spindle is around 150 close to what I paid for the shaper it's self
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post #5 of 12 Old 06-26-2017, 01:17 PM
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Thanks for the responses very helpful I guess I'll give it a try seeing as a 1" dia delta spindle is around 150 close to what I paid for the shaper it's self
I don't know if a 1" shaft would help you or not. It's still narrow where the spindle goes into the bearing. Those cutter heads are really intended for a heavier shaper so what you do with it on the Delta you need to think light duty. Also get yourself a scale if you don't have one and weight the knives and make sure both are the same weight. The machine will run a lot smoother and be safer if the knives balance. I have a heavier shaper and still make every set of knives within a tenth of a gram of each other.
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post #6 of 12 Old 06-26-2017, 03:36 PM
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You probably can't use a one inch spindle if it didn't come with one. The bigger spindles require bigger motors.


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post #7 of 12 Old 06-26-2017, 04:48 PM
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Is yours the light weight shaper about 3/4 hp? If so it isn't really hefty enough to use a big cutter, but if you have decided to give it a go you can get bushings to adapt your 3/4 spindle to a 1 inch bore on the cutter
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post #8 of 12 Old 06-26-2017, 04:58 PM Thread Starter
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Yeah sorry should have let u guys know more about shaper it's an older delta Rockwell 1.5 hp it seems kinda beefy for only being 1.5hp it's also a 3ph set up on single phase with a converter box if that makes a difference
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post #9 of 12 Old 06-26-2017, 07:26 PM
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The 3 phase makes no difference

It's still a "hobby" size shaper, I have a 1 HP Craftsman with a 1/2" spindle and it's pretty much useless. I could recommend A Grizzly 3 HP for more of a commercial shaper, but it's at the very low end for those. When I was setting up a milling room in my shop I had 2 of the 3 Hp Grizzlys but that idea never did come to fruition. They seem very well made and for the price, I was impressed.... under $1000.00.

Used Rockwells or Deltas or Bridgewood, or SCMI would be a better industrial shaper.

The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)

Last edited by woodnthings; 06-26-2017 at 08:44 PM.
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post #10 of 12 Old 06-26-2017, 08:28 PM
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The problem with putting a larger spindle on a Delta shaper is the end you put in the bearing is only 9/16" in diameter so regardless of the diameter of the upper spindle it's still 9/16" and should be treated and used as 9/16".
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post #11 of 12 Old 06-27-2017, 01:09 AM Thread Starter
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Yes I see what your saying they all have that skinny "stem" that won't hold up to too much serious abuse I'm definitely a novice and more a hobbyist and don't have the coin to drop on a larger machine..but now that I understand that the larger spindle won't help and I'd probably just break it would you say that the 2 in cutter head 3/4 bore with 1/4 or 5/16 blades that are well balance be handled alright on the delta? Or has anyone tried a similar set up on a similar shaper?
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post #12 of 12 Old 06-27-2017, 01:20 AM Thread Starter
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This is not the exact unit I have but same shaper I'm working with
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