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Forum topic by Obie posted 03-08-2015 01:29 AM 658 views 0 times favorited 16 replies Add to Favorites Watch
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Obie

24 posts in 2561 days


03-08-2015 01:29 AM

Oh great and wise lumberjocks, I see insight.

Pictured below is something I am contemplating. The material will be Goncalo Alves. I want to drill the holes on the top a 1/2” diameter and then route the grooves on the side with [whatever bit I can find]. I want the routed groove to cut through to the drilled holes (ignore the yellow and just pretend you can see into the drilled holes).
If I drill first then route will I risk chipping/chunking when I pass through the drilled holes? Or, vice versa, if I route the groove first will I mess up the holes as I drill them? Or, both?
I kind of wanted to drill the holes first so I could sneeak up on the final depth of the groove using multiple passes.

Material will be Goncalo Alves. Will be using a drill press and a router table. So, none if it will be fumbling by hand.

It’s an $8 block of wood and I really don’t want to learn the hard way… I have learned a lot of things on the router the hard way but, none of them have involved blood, yet.

What are your thoughts? Thank you in advance!

-- "Measure Once, Curse Twice"


16 replies so far

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Obie

24 posts in 2561 days


#1 posted 03-08-2015 01:32 AM

Hmmm, image didn’t quite come out right but well enough to get the idea….

-- "Measure Once, Curse Twice"

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EEngineer

1061 posts in 3075 days


#2 posted 03-08-2015 01:36 AM

I think you risk tearout more drilling after routing. In my experience, tearout is worse drilling through an open space with no backer. I have routed through existing holes many, many times with no tearout.

Drill first, then route.

-- "Find out what you cannot do and then go do it!"

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Patch2020

97 posts in 702 days


#3 posted 03-08-2015 01:41 AM

You might try drilling first, then insert some 1/2” dowels into the holes. The difference in the dowel and the block will let you see well enough to set depth while filling the space and helping with tear out.

-- Patch2020, Tennessee

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Obie

24 posts in 2561 days


#4 posted 03-08-2015 01:59 AM

Excellent! Experience and ingenuity. Thank you both!

-- "Measure Once, Curse Twice"

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firefighterontheside

13451 posts in 1318 days


#5 posted 03-08-2015 02:03 AM

I agree with drilling first. Less likely to get tear out at 18,000 rpm than with 1200 rpm.

-- Bill M. "People change, walnut doesn't" by Gene.

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Obie

24 posts in 2561 days


#6 posted 03-08-2015 02:03 AM

Whoa… That gives me another idea for the future. Drill the holes over-sized, route the groove, then fill the drilled holes with a contrasting color of hardwood dowel and drill the final hole through the center of the dowel. That might look really interesting!

-- "Measure Once, Curse Twice"

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firefighterontheside

13451 posts in 1318 days


#7 posted 03-08-2015 02:07 AM

If you do that then your routed groove won’t open into the drilled hole unless you then go back and reroute the groove, in which case you’ll be right back where you started.

-- Bill M. "People change, walnut doesn't" by Gene.

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Ghidrah

667 posts in 683 days


#8 posted 03-08-2015 02:18 AM

If no one else suggested it already how about filling the drilled holes with dowels, this will minimize and or eliminate tear out.

-- I meant to do that!

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Obie

24 posts in 2561 days


#9 posted 03-08-2015 02:43 AM


If you do that then your routed groove won t open into the drilled hole unless you then go back and reroute the groove, in which case you ll be right back where you started.

- firefighterontheside

If I did that, I would not reroute the groove. The dowel fillers would be left exposed in the groove and add a little more dimension. Just like the picture (not ignoring the yellow parts this time)I posted except with larger holes/dowels.

-- "Measure Once, Curse Twice"

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MT_Stringer

2851 posts in 2692 days


#10 posted 03-08-2015 02:52 AM

What the heck is that anyway?

-- Handcrafted by Mike Henderson - Channelview, Texas

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firefighterontheside

13451 posts in 1318 days


#11 posted 03-08-2015 02:55 AM

Ah, I see. I was under the impression you wanted a hole to be open between the hole and the groove.

-- Bill M. "People change, walnut doesn't" by Gene.

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Obie

24 posts in 2561 days


#12 posted 03-08-2015 04:35 AM



What the heck is that anyway?

- MT_Stringer

It’s going to be a …. holder? for 20 rounds of .308

-- "Measure Once, Curse Twice"

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Obie

24 posts in 2561 days


#13 posted 03-08-2015 04:48 AM

Something like this except I was just trying to make it unique.

-- "Measure Once, Curse Twice"

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TheFridge

5765 posts in 947 days


#14 posted 03-08-2015 04:54 AM



Whoa… That gives me another idea for the future. Drill the holes over-sized, route the groove, then fill the drilled holes with a contrasting color of hardwood dowel and drill the final hole through the center of the dowel. That might look really interesting!

- Obie

That sounds pretty awesome.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

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MT_Stringer

2851 posts in 2692 days


#15 posted 03-08-2015 05:17 AM

Pretty cool.

-- Handcrafted by Mike Henderson - Channelview, Texas

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