Prototyping a marking gauge
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23 January 2016 at 8:47 pm #134106
I had 20 minutes to fiddle around yesterday, and I thought I would put together another marking gauge. This time I wanted it to be “fancy” – whatever that means
Anyway, this is a prototype of what I want to build. I think the shape works well, but I don’t know if I like the contrast between the walnut and maple. Maybe I should make the stock from Cherry? The shape of it is actually quite comfortable.
This isn’t polished at all and I took some shortcuts. – I’ll post a picture when I build a proper one. For example, I just use CA glue to attach the brass plate. I’m going to try to recess it in the stock next. Also, I want to get a brass thumb screw instead of the steel one.
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You must be logged in to view attached files.23 January 2016 at 8:48 pm #134108Also,threaded inserts are hard to get in straight and square. Is there a trick to make it easier?
23 January 2016 at 9:15 pm #134110Threaded inserts are a pain to get in square. If you have or know anybody that has a drill press it’s much easier. You can put the insert on a bolt with stop nuts and hand turn the chuck to press the insert in.
With that said, I’m not sure how much it matters for the screw to contact the wear plate completely square to get a good hold. Sorta-square may do it, as long as there was enough contact to hold the beam in place. Does your prototype hold it good enough?
You can chuck the screw and use a wedge, too.
Lee Valley sells an insert nut driver that attaches to a power drill for installing threaded inserts (there are two versions for either 1/4-20 or 5/16-18). I have a T-shaped threaded driver that does the same thing, but I don’t see it on the LV website. I think that’s where I bought it.
23 January 2016 at 11:52 pm #134127[quote quote=134110]With that said, Iām not sure how much it matters for the screw to contact the wear plate completely square to get a good hold. Sorta-square may do it, as long as there was enough contact to hold the beam in place. Does your prototype hold it good enough?[/quote]
Oh, it holds just fine. It looks a little funny when you notice it š
24 January 2016 at 11:01 pm #134161I’ve used the method that Derek mentioned to get the inserts screwed in. Except, without a drill press, I put the insert and a stop nut on a short length of threaded rod and chuck that up in my power drill. I hold it as perpendicular as possible to the hole and drive it in.
The other thing I did on a marking gauge I made was put a plastic spacer in the hole between the screw and the beam. That way, the beam doesn’t get marred by the metal screw. I haven’t used it much yet, but it hasn’t slipped on me so far.
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