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Driil angle holes on Drill Press

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Forum topic by rockmolsen posted 08-13-2016 07:40 PM 1247 views 2 times favorited 34 replies Add to Favorites Watch
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rockmolsen

161 posts in 1041 days


08-13-2016 07:40 PM

Topic tags/keywords: question drill press

I decided its time I finish the deck railing on our new deck. The railing uses 3/4” EMT and on the straight rail no problem. Now because of the angle of the stairs I need to drill 57 degree angled holes to account for the slope of the stairs.

I have been down in my shop this morning coming up zero. My table on the drill press I think only tilts about 40 or 45 degrees. The supports that I’m making are about 34” long so as you move through and I don’t tilt the table the height will increase as I move the piece through?

Any ideas?

-- Rick --------The measure of who we are is what we do with what we have.


34 replies so far

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waho6o9

7180 posts in 2045 days


#1 posted 08-13-2016 09:32 PM

How about something like this? If I understand you correctly.

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MadMark

978 posts in 921 days


#2 posted 08-13-2016 09:42 PM

The problem is that his angle is past 45° and his table won’t go that far and the angle is too steep to drill safely. As I look at the problem the best solution would be to drill in place with a self countersinking bit.

M

-- Madmark - Madmark2150@yahoo.com Wiretreefarm.com

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distrbd

2228 posts in 1914 days


#3 posted 08-13-2016 09:49 PM

I would try 33° and see if that works.

-- Ken from Ontario, Canada

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waho6o9

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#4 posted 08-13-2016 10:01 PM

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Blackjack59

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#5 posted 08-13-2016 10:02 PM

I like waho6o9s jig. Seems it would work perfectly.

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Tony_S

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#6 posted 08-13-2016 11:34 PM



I would try 33° and see if that works.

- distrbd

Yup. 33° is the angle you need.

-- It is the mark of an educated mind to be able to entertain a thought without accepting it. Aristotle

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rockmolsen

161 posts in 1041 days


#7 posted 08-14-2016 02:24 AM

Setting to 33 degrees will not work. if you look at the diagram you’ll see why.

Regardless which side you approach from the angle still has to be 57 degrees. The opposing 33 degree angle would be off the 90 degree plane that really doesn’t exist. I believe my only option is to to create a 57 degree angle guide from a piece of stock ( cut a 12 degree bevel on one side and 45 on the opposing side) and manually drill each hole. Just a visual guide to manually drill, 8 holes x 16 pieces = 128 holes. I was going to use a forstner bit but that might walk at that angle. Tomorrow I will make and test the guide jig and report back.

-- Rick --------The measure of who we are is what we do with what we have.

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bbasiaga

759 posts in 1463 days


#8 posted 08-14-2016 02:49 AM

I took two pieces of mdf and joined them with a hinge. They were the same size as my drill press table. I can then take a narrow piece of wood and pit it between them. The farther I push it toward the hinge, the bigger the angle I get.

You could do the same I think. Use your bevel gauge to set the top table of the jig at the correct angle, and drill away with your drill press.

Brian

-- Part of engineering is to know when to put your calculator down and pick up your tools.

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devann

2202 posts in 2160 days


#9 posted 08-14-2016 03:13 AM

If available have you considered renting a bore buster?

Here’s a photo of one of two of a crude version I made many years ago. It started with the 4×4 & drill press. The 4×4 was drilled then cut the specific miter angle, and then a dado centered the width of the handrail to be drilled. On the top side of the handrail is block of wood shaped for centering handrail. I’s on a threaded bolt that squeezes the handrail to the 4×4.

-- Darrell, making more sawdust than I know what to do with

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BobAnderton

219 posts in 2258 days


#10 posted 08-14-2016 03:22 AM

Rick, I think you’re getting turned around by the fact that when your drill press table is set at “zero” it drills a hole that is 90 degrees to the face of the board. Look at your diagram again. You want to drill a hole that is 33 degrees away from straight into the face of the board. Set the table at 33 degrees and drill em.

Your angle gauge shows the angle between the post and rail as 57 degrees, but if that blade (rail) were horizontal in the second to last picture in your set it would be reading 90. You’d drill that hole by setting the drill press table to zero.

-- Bob Anderton - Austin, TX - Nova 3000 lathe, Alaskan Mark III mill, Husqavarna Saw

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Tony_S

607 posts in 2551 days


#11 posted 08-14-2016 11:13 AM



Setting to 33 degrees will not work.

Yes it will…I just did it. Example…

One cut on the miter saw for the handrail at 33 degrees.

One hole with the drill press table set at 33 degree’s.

gives you this…

The angle of both stairs and railing is typically measured on a horizontal plane, not a vertical plane. Nothing wrong with measuring on the vertical as long as you realize that you have to convert that angle (57) to a horizontal plane(33) because that’s what your miter saw and drill press table are referencing.
Also, if your going to reference your angle directly off of the newel post, make sure it’s plumb.

-- It is the mark of an educated mind to be able to entertain a thought without accepting it. Aristotle

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waho6o9

7180 posts in 2045 days


#12 posted 08-14-2016 01:31 PM

I thought the posts were going horizontally to match the ones on the upper deck.

Oops.

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Tony_S

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#13 posted 08-14-2016 02:01 PM



I thought the posts were going horizontally to match the ones on the upper deck.

Oops.

- waho6o9

That would be unusual, but could be…it wasn’t specified.
Normally with this type of layout/design, they would either be installed vertically, or on the same plane as the stairs and hand rail.

-- It is the mark of an educated mind to be able to entertain a thought without accepting it. Aristotle

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waho6o9

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#14 posted 08-14-2016 02:04 PM

Thanks Tony_S

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BobAnderton

219 posts in 2258 days


#15 posted 08-14-2016 03:23 PM

I think the intent is for the EMT to be going down diagonally at a 33 degree angle, parallel to the handrail.

-- Bob Anderton - Austin, TX - Nova 3000 lathe, Alaskan Mark III mill, Husqavarna Saw

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