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Thread: WIP - John's Workbench Mk2!!
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24th October 2012, 12:09 AM #241
unfortunately I don't think this arrangement will work
drawbore pins will be more than adequate to hold the end cap on, provided you remember top slot all the holes apart from the one at the front in line with the vise.
However, because the end cap is effectively a 160mm long cantilever, I'm worried about what the weight of and clamping forces of the Dawn vise will do.
I suspect it will cause the cap to bend (rotate) relative to the bench top
If you feel that your bench is a little on the short side there are a number of jigs (such as planing and sticking boards) that will give you that little bit of extra length when needed.
Also I've never had dog holes, so I really don't know...do I drill 20mm holes in my benchtop to allow for the 3/4" holdfasts? Obviously a 3/4" hole won't allow for a 3/4" thingo to fit inside it loosely.
remember to champher the top of your 19mm holesregards from Alberta, Canada
ian
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25th October 2012, 10:59 AM #242GOLD MEMBER
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As the previous contributor said, 3/4" or 19mm is the standard for a round dog hole, and I think a 20mm hole would be too loose for the standard holdfasts meant for a 3/4' inch hole - unless you have a very thick bench. Holdfasts are smaller than the hole, and depend on their being at an angle for their holding, but being straight for their easy removal.
Other accessories such as Veritas are a very snug fit in a 3/4" hole.
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25th October 2012, 05:06 PM #243
Hi John
Coming in a little late.
I would not drawbore. For one, this may inhibit movement. Further, it cannot be tightened if needed.
On my bench one side of the end cap was fixed with dovetails.
The other was "floating". Three bolts controlled movement and provided strength.
I wrote this up over two posts:
http://www.inthewoodshop.com/ShopMad...ngaBench4.html
http://www.inthewoodshop.com/ShopMad...ngaBench5.html
Regards from Perth
DerekVisit www.inthewoodshop.com for tutorials on constructing handtools, handtool reviews, and my trials and tribulations with furniture builds.
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2nd November 2012, 12:32 AM #244Junior Senior Member
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WIP - John's Workbench Mk2!!
The end caps are on!!
Thanks for all the advice guys. Although I'm realising that I'm a traditionalist woodworker, and I really wanted pins instead of bolts, I caved, took the advice of those that know more than me, and bought some bolts.
That was just the beginning of my dramas though (when has anything ever gone smoothly?).
Firstly re-cut my caps back to 85mm. Which actually worked out well, because when I dug them out from under my bench, I found them too badly cracked to use at the previous width (strange...dry, old wood)
Next the postie came and gave me a set of Sheffield brace bits, which I sadistly used to drill the holes through the caps and into the bench (hey, if I can't have wooden pins, then I'm going to add tradition in another way ).
Then my little helper arrived
Next I needed to tap holes in the 10mm thick flat steel that I was using as nuts, so off to the tool shop (a new tap and die set ). Unfortunately I broke 3 new tap handles tapping 12mm holes. So in frustration (and a bit sick of both me and the 3 warranty replacements), they did me a great deal on a bigger handle. Job now finished!
The Dawn is just sitting there for now. I need to get a drill bit to countersink both the end cap bolts and the vice bolts. Then I just need my strong, injury free friend to flip it over again.
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2nd November 2012, 01:21 AM #245
Hi John
you really should align the edge of the Dawn vise with the front of your bench
if you don't the dog holes will be too far from the front edge and you'll be reaching over to work on anything held between the dogs.
BTW, that's a really useful helper you have thereregards from Alberta, Canada
ian
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2nd November 2012, 07:28 AM #246Junior Senior Member
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WIP - John's Workbench Mk2!!
I'm with you on that one, but in the 1st pic to the right of the dawn, there is a black texter square with a tenon in the middle - that's where the bench leg goes. This prevents me doing this. I estimate my dogs should be 12 - 15cm in. There should be enough meat in the vice to allow me to put the dogs slightly off centre.
This is a good lesson to those planning their benches - make sure you know what vices you are planning on using before you start building your bench.
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2nd November 2012, 10:30 AM #247Skwair2rownd
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Looking really good John. Good to see you have thus far survived all the trials and tribulations.
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2nd November 2012, 08:45 PM #248
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2nd November 2012, 09:22 PM #249
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2nd November 2012, 09:37 PM #250Junior Senior Member
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WIP - John's Workbench Mk2!!
Here is me struggling to hold the vice with 1 hand and a thigh, take a pic and not drop it on my toes.
As you might be able to see, the 12cm mark is almost level with one of the 2 steel guide runners on the dawn (not sure of the name, sorry).
I still have to make to jaw liners. I was thinking of 2 1/2" for the vice handle face (the dog hole face)?
(And before anyone comments, yes I know that I have to trim the end caps to length - good thing someone said not to glue them down huh!!)
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6th November 2012, 12:51 AM #251Junior Senior Member
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WIP - John's Workbench Mk2!!
I thought that I'd share my solution for a little annoying problem. I need to countersink the bolt holes. But instead of using a Forsner bit to create the counter sinks, followed by the 10.5mm bolt hole, I decided to do it backwards! So I excitedly drilled all the holes (vice and end caps), then realised that I really wasn't sure how to countersink them using a handheld drill.
So, what I did was drill the appropriate size countersink hole completely through an offcut. Then I clamped it over the existing hole.
That created a jig for the Forsner bit, resulting in 'almost completely perfect' countersinks.
And, of course the finished product (I'm capping the vice bolts, and leaving the end cap bolts open)
Next...flatten the top completely (it's been done roughly) and build up the courage to drill dog holes all over my bench...
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6th November 2012, 08:03 AM #252
Morning, John. Neat solution!
When I saw your thread with the bare bolt holes I thought "Hmm, he's created a little problem for hisself, here!", and wondered how you were going to solve it.
I face a similar problem when making a saw handle - aligning for the nut countersink after drilling the bolt holes. But that's relatively easyto deal with, because I can use the drill press. All I need do is line up the hole with the bolt-size drill, tighten down the vise, & switch to a forstner for the countersink. The good thing about Forstners is they are not bothered by an existing hole, it's just a matter of getting them accurately centered to start...
Cheers,IW
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6th November 2012, 08:33 AM #253Senior Member
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Hi John,
I have faced this same problem once or twice. My solution was to insert a tight piece of timber into the the hole, slightly longer than the depth of the countersink needed. Making sure to leave it flush with the top so I can mark the center, the go ahead and countersink.
A solution to a problem I shouldn't have had in the first place
Shippers
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7th November 2012, 10:35 AM #254GOLD MEMBER
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John,
When you say 'I decided to do it backwards", was this perhaps due to a memory lapse?
Surely it's easier to use the Forstner, and then use the mark left by the Forstner bit tip to drill the main hole?
Anyway, a good save!
Chris
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7th November 2012, 12:25 PM #255Junior Senior Member
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