router spiral bit grabs, ruins cut - Page 3 - Woodworking Talk - Woodworkers Forum
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post #41 of 60 Old 08-28-2020, 10:29 AM
where's my table saw?
 
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Maybe this drilling machine will work for you?

Quote:
Originally Posted by John Smith_inFL View Post
Bruce - if this is going to be an on-going project,
can you have another drill press and router in your budget ?
if you are getting into a crunch with changing bits and cutters,
more tools in the assembly line can lessen the "handling hassle" greatly.
especially if it is just you on the assembly line.
looking forward to following your journey in this project.

John

.

I stumbled across this small "drill press" pm Amazon, but it looks like it would be perfect for hogging out the center portions of your blocks with a sharp Forstner bit of the correct size AND it's cheap at $107.00 with free Prime shipping. Mostly a 4 star rating what ever that's worth? I am considering a purchase myself even though I already have 4 drill presses.
There are some issues with the power cord which should be clarified. See the reviews.

https://www.amazon.com/MINIQ-Electri...1GZDV9NB2S3AKM





A more traditional drill press at less than $100.00:
https://www.amazon.com/WEN-4208-5-Sp...1G4FSH6EK4V3PP

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; 08-28-2020 at 10:31 AM.
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post #42 of 60 Old 08-28-2020, 10:34 AM
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the pix don't show up on my machine -

https://lh3.googleusercontent.com apparently isn't public?
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post #43 of 60 Old 08-29-2020, 10:19 AM Thread Starter
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I'm sorry. Google Photos ruined Picasaweb when they took over. Apparently there is no longer a way to make an album public.

I don't understand how @moosie could see the pics, though. Now I can't even see them on Woodworking talk.

OK, I just discovered the drag & drop feature
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post #44 of 60 Old 08-29-2020, 10:22 AM Thread Starter
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Thanks, but budget aside, I have limited shop space. For some strange reason, my wife thinks my shop, with the big door from the driveway, is a place to park her car. :)
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post #45 of 60 Old 08-29-2020, 10:29 AM Thread Starter
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Quote:
Originally Posted by moosie View Post
You make prettier jigs than I do...

Does it help with the original problem?
I expect @TomCT2's suggestion to drill corners and center edges with 1/2" forstner to eliminate the grabbing problem and your jig-with-handles idea to make it safer.

I'll find out in a few days with the next batch.

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post #46 of 60 Old 08-29-2020, 02:01 PM
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now _that's_ a good looking grabber thingie!
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post #47 of 60 Old 08-29-2020, 05:05 PM Thread Starter
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Smile

Quote:
Originally Posted by TomCT2 View Post
now _that's_ a good looking grabber thingie!
So that's the technical term for it!

All the round-overs make it nicer looking for sure, but the real reason for them is that at my age, with thin skin and on blood thinners, I don't want sharp edges and corners near the hand-holds. :)
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post #48 of 60 Old 08-30-2020, 12:25 AM
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Quote:
Originally Posted by brucet999 View Post
Thanks, but budget aside, I have limited shop space. For some strange reason, my wife thinks my shop, with the big door from the driveway, is a place to park her car. :)
When I decided three years ago to turn my side of the garage into a shop, the first hint to the wife was after a machine was delivered.

"What's that big green thing in the garage?"

"It's a shop, not a garage. And it's a drill press. I gotta great deal, I've always needed one, you just never realized, and I'll use it the rest of my life."

Which odds were that afternoon that it would be a short life
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post #49 of 60 Old 08-31-2020, 07:00 AM
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Quote:
Originally Posted by moosie View Post
When I decided three years ago to turn my side of the garage into a shop, the first hint to the wife was after a machine was delivered.

"What's that big green thing in the garage?"

"It's a shop, not a garage. And it's a drill press. I gotta great deal, I've always needed one, you just never realized, and I'll use it the rest of my life."

Which odds were that afternoon that it would be a short life
what is going to guide the cut?
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post #50 of 60 Old 09-01-2020, 02:42 AM
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Quote:
Originally Posted by TimPa View Post
what is going to guide the cut?
Are you referring to the 'handle thingie'? It's my understanding the OP already has a custom fence surrounding the workpiece. It was just a matter of holding the piece safely, and firmly against the fence to eliminate chatter. And of course the suggestions from various others to remove more wood first.
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post #51 of 60 Old 09-01-2020, 05:32 PM Thread Starter
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See second pic in opening post.

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post #52 of 60 Old 09-01-2020, 08:21 PM
where's my table saw?
 
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Quote:
Originally Posted by moosie View Post
Are you referring to the 'handle thingie'? It's my understanding the OP already has a custom fence surrounding the workpiece. It was just a matter of holding the piece safely, and firmly against the fence to eliminate chatter. And of course the suggestions from various others to remove more wood first.
Quote:
Originally Posted by brucet999 View Post
See second pic in opening post.

This photo?

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)
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post #53 of 60 Old 09-02-2020, 01:35 AM Thread Starter
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I can't figure out how to delete a bungled post

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post #54 of 60 Old 09-02-2020, 01:49 AM Thread Starter
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Thanks again Tom.

I implemented your 6 x 2 bores idea and glad I did. I have no doubt now that doing 1 1/4" bores first would not have turned out well.

Here is my jig for 1/2" holes. I later found that 1/2" forstner can't clear debris well, so had to use many short plunges and clear the bit. I switched to a 1/2" brad point drill bit to vastly speed up the operation.

The "center point" is an indent to use to align the jig with the chuck next time I have to set it up.

And setup for 1 1/4" holes:



And the result ready for the router table.
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post #55 of 60 Old 09-02-2020, 12:34 PM
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I see a bit of cross grain tear out, even from the forstner bit.... what is the eventual finish to the piece?
sometimes a coat of varnish/urethane is just enough 'glue' to eliminate fine tear out...
is it possible to 'pre-finish' the top surface, even if it later gets retouched?


with so much material hogged out, I think a down spiral/cut bit would work - another thing to try if the tear out becomes an issue.
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post #56 of 60 Old 09-02-2020, 07:22 PM Thread Starter
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Next step is to rout out the inside to a nice rectangle with 1/2" rounded corners and to even up the various drill depths for a flat bottom inside. I'll have to see whether I need to do that in two depth steps or if, with so little material to remove along the sides now, I can save a lot of time and do it all in one go. Doing a batch of 37 pieces this time.

Then the dovetail routing will be done for the sliding lid, taking away any tear-out from the hogging out steps.

BTW, I found that by making my stop-blocks with 30 points, I don't have to waste time thoroughly cleaning out debris from the previous piece; just sweep the one edge and the points with a fingertip; no corner build-up to deal with.

I just realized that I haven't included a pic of the final product. This one is poorly focused, but will give you the idea:
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post #57 of 60 Old 09-03-2020, 06:54 AM
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i truly hope it goes well for you. my fear is that this is still not going to be an easy router task for you. i hope i am wrong, but i think you will need to make extra's...

it is a great looking project, and you should be commended for your effort!
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post #58 of 60 Old 09-04-2020, 12:01 AM Thread Starter
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Tried it today with bit at the full 1 5/16" "depth" (it's a router table, so actually 1 5/16" above the table), which amounted to 1/32" deeper than the 1 1/4" forstner (with center brad point ground off) bores. I started with the softest wood first -African mahogany - and it worked flawlessly. Then I progressed to sapele, walnut, maple and finally white oak; all cut cleanly and easily with not a hint of grab. So I ran the other 37 pieces at a rate of about 2 minutes per; clamp workpiece into the "grabber thingie", lower center onto the bit, run once, remove and blow out chips from the fixed limiter jig, then re-run for smoothest possible cut, remove from grabber thingie.

Thanks again to all for your comments and suggestions. Now I have just 102 more to do to reach my goal of making 200 "Secret Treasure Boxes".

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post #59 of 60 Old 09-04-2020, 12:13 AM
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I love it when a plan comes together.
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post #60 of 60 Old 09-04-2020, 10:24 AM
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It is obviously time for @TomCT2 or @brucet999 to register the trademark on "grabber thingie." :-)
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