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Twin screw vise #4: Everything but the holes

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Blog entry by Dave Polaschek posted 12-04-2017 06:08 PM 1067 reads 0 times favorited 15 comments Add to Favorites Watch
« Part 3: Mounting details Part 4 of Twin screw vise series Part 5: Boring the holes »

I’ve been working on getting everything prepped for installing my vise, and I think I’m running out of things to do. Looks like I might have to drill the holes for it this afternoon if my back behaves.

I’ve removed the planing stop from my bench. It was going to be in the way of the vise. I also filled the holes where it had been with walnut dowels and planed them smooth. I’ll reinstall it once the vise is in and I figure out where it needs to be.

I’ve clamped the vise jaws together in alignment and marked where the holes need to be. The whole assembly is clamped to my bench so I’ll be able to drill the holes without things moving on me.

I’ve built a jig to help me drill my holes perpendicular to the vise chops.

And I’ve cleaned up the 1.5 inch auger I bought off eBay and sharpened it up so it drills fairly cleanly. I should sharpen the edges a little more so it works a little better, but I think that’s about the last of the procrastination I can do.

Next post, hopefully I’ll be mounting the hardware and jaws on the bench!

-- Dave - Minneapolis



15 comments so far

View doubleDD's profile (online now)

doubleDD

6838 posts in 1878 days


#1 posted 12-04-2017 06:22 PM

Looking good Dave. I wonder how a forstner bit would work. Cut it on a low speed with an extension?

-- Dave, Downers Grove, Il. -------- When you run out of ideas, start building your dreams.

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Dave Polaschek

1185 posts in 417 days


#2 posted 12-04-2017 06:35 PM

An inch and a half forstner bit in a brace would be hard to turn, I suspect. But the vise hardware and crubber will cover up minor irregularities if my auger bit chews things up a little. And touching up the sides of the bit (after lunch) should get me cleaner edges. I’ll test on another red oak scrap first.

I’ve also got an expanding spade bit that might work, but I know that’s harder to steer straight with a brace.

-- Dave - Minneapolis

View Ron Aylor's profile (online now)

Ron Aylor

1770 posts in 482 days


#3 posted 12-04-2017 06:43 PM

Looking good, Dave. You might also consider increasing the bevel on that auger!

-- Ron in Lilburn, Georgia.  Knowing how to use a tool is more important than the tool in and of itself.

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Dave Polaschek

1185 posts in 417 days


#4 posted 12-04-2017 06:48 PM

I was wondering if that would help, Ron. I don’t have a file that’ll get in there to do that, so that might require a trip to the hardware store. I also need to re-handle the auger. The old handle is cracked, and the threads that used to hold it in place have rusted off. It’s usable at the moment, but…

-- Dave - Minneapolis

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Ron Aylor

1770 posts in 482 days


#5 posted 12-04-2017 06:58 PM

Yep … you need an auger file. Are there any spurs left on your auger? Don’t file the edges of the spiral … you’ll change the size!

-- Ron in Lilburn, Georgia.  Knowing how to use a tool is more important than the tool in and of itself.

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Dave Polaschek

1185 posts in 417 days


#6 posted 12-04-2017 07:06 PM

Nope, no spurs left. But my back is acting up so I’m probably done for the day, anyhow. Might make it to the hardware store, but that’s probably going to be it for today.

As for changing the size, I won’t, but in this case it wouldn’t matter a lot. The LV vise hardware needs holes that are about 1 7/16”. The extra space is to give you room to adjust things to make up for holes that aren’t perfectly parallel. Plan B is to use the expanding spade bit set to about 1 3/8 and then expand (and straighten) the hole with the tapered reamer I made, but I’d rather use the auger if possible.

-- Dave - Minneapolis

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Ron Aylor

1770 posts in 482 days


#7 posted 12-04-2017 07:13 PM



Nope, no spurs left. But my back is acting up so I m probably done for the day, anyhow. Might make it to the hardware store, but that s probably going to be it for today.

As for changing the size, I won t, but in this case it wouldn t matter a lot. The LV vise hardware needs holes that are about 1 7/16”. The extra space is to give you room to adjust things to make up for holes that aren t perfectly parallel. Plan B is to use the expanding spade bit set to about 1 3/8 and then expand (and straighten) the hole with the tapered reamer I made, but I d rather use the auger if possible.

- Dave Polaschek

Use the expansion bit to create a clean start and then go to town with your auger. The auger looks like it cut okay … just with no spurs the hole is ragged.

-- Ron in Lilburn, Georgia.  Knowing how to use a tool is more important than the tool in and of itself.

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Dave Polaschek

1185 posts in 417 days


#8 posted 12-04-2017 07:29 PM

Sounds like a plan, Ron. Thanks for talking me through it!

I was also thinking that the ragged hole was due in part to the red oak scrap I test-drilled. It wasn’t the soundest wood, and might’ve just torn up on a weak spot in the wood. But using both bits should get me a clean start and then a reasonable hole.

-- Dave - Minneapolis

View Ron Aylor's profile (online now)

Ron Aylor

1770 posts in 482 days


#9 posted 12-04-2017 07:35 PM



Sounds like a plan, Ron. Thanks for talking me through it!

I was also thinking that the ragged hole was due in part to the red oak scrap I test-drilled. It wasn t the soundest wood, and might ve just torn up on a weak spot in the wood. But using both bits should get me a clean start and then a reasonable hole.

- Dave Polaschek

My pleasure! With a sharp bit one should be able to drill a clean hole through a roll of toilet tissue … LOL! Keep it up and keep us posted!

-- Ron in Lilburn, Georgia.  Knowing how to use a tool is more important than the tool in and of itself.

View duckmilk's profile

duckmilk

2542 posts in 1159 days


#10 posted 12-04-2017 11:17 PM

Good luck Dave. That looks like a bit of a job.
I agree with Ron about using the expansive bit at the very beginning just to give you clean edges to the hole. Then switch to the auger to get almost all the way through, just until the lead screw penetrates. Then back to the expansive bit from the back side to give you a clean exit hole.

-- "Duck and Bob would be out doin some farming with funny hats on." chrisstef

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Dave Polaschek

1185 posts in 417 days


#11 posted 12-04-2017 11:46 PM

Seems like a plan, Duck. Thanks.

I’ll actually be drilling through both jaws of the vise, plus a 3/4” pine board, and then I have a fir 2×8 backing up the whole mess. It’ll be some work, but I don’t need to hurry. And the auger does go through oak pretty quickly. Five or six turns got me a quarter inch, so to go through the stack I’ve got will be… less than a million. :-)

-- Dave - Minneapolis

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duckmilk

2542 posts in 1159 days


#12 posted 12-05-2017 12:52 AM

Too bad you aren’t close Dave. I have an old beam boring machine similar to the Millers Falls one pictured here but mine is a Snell Manufacturing one. Used in the old days for timber framing. Would make quick work of that job. No pics of mine, it is boxed up. Not sure if I have a 1 1/2” bit or not.

You sit on it and crank the handles.

-- "Duck and Bob would be out doin some farming with funny hats on." chrisstef

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Dave Polaschek

1185 posts in 417 days


#13 posted 12-05-2017 01:12 AM

Yeah, Duck. I’m looking for a post drill too, but for now I just need to get the vise finished and get my back fixed so I’ll be able to pick up a post drill and have a clean spot on the bench to fix it up.

If you decide you don’t need the beam-boring machine, let me know, and maybe I’ll use it as an excuse to take my sweetie on a vacation to Texas. We’re both Minnesota natives, but some winters the idea of heading south with the ducks and geese sounds like a pretty good idea.

-- Dave - Minneapolis

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robscastle

4503 posts in 2039 days


#14 posted 12-06-2017 11:16 AM

Hello Dave,

I was going to offer to sharpen your augers for you, after reading the above comments as repencompence for possibly offending you with my Luxury Boat comment, then I checked where you lived, ... its possibly a bit far away to be able to assist.

-- Regards Robert

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Dave Polaschek

1185 posts in 417 days


#15 posted 12-06-2017 12:39 PM

No worries, Robert. The auger file is on the way from Lie-Nielsen, but even without it, the bit cut cleanly enough. The holes are through the vise chops, and I’ll be drilling the front of the bench (using the chops to guide me) today and then writing the next blog entry.

-- Dave - Minneapolis

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