Troubleshooting Holdfast Issues

After boring the first few holdfast holes, I realized that I had serious issues.  My holdfasts simply weren’t biting.  Often, they were jumping around in their holes.  I had to find a solution, and fast.

The bench top is 4-1/2 inches thick.  The holdfast holes are 3/4 inch in diameter.  I am using Gramercy holdfasts.  They are very well made, and should survive years of abuse.  I did some research and determined that the most likely cause was the thickness of the bench top.  How could I resolve this with the holes already bored?

I received some excellent advice from my friends on Twitter and decided that I would counter bore the holes from the bottom with a large diameter hole.  To center the holes, I inserted a piece of 3/4 inch dowel.  After some trial and error, I determined that the most effective nominal thickness was around 3 inches.  The holdfasts work beautifully.  The solution was quick and easy.

I need to clean up the surfaces and coat everything in boiled linseed oil.  Then, I will finally be able to start my first project on the Roubo.  Stay tuned

You can find links to my other Roubo posts here:  Project Index

IMG_5420

Holdfast in action

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Roubo Workbench: I Met the Devil…

cutting the shiplap joint

…and he lives in the details. I thought I would have completed the Roubo workbench by now.  I’m getting close, but these little tasks add up. I did finish the shelf.  I created 1-1/4″ square ledgers and screwed them to each of my stretchers.  These are the only screws found on the entire workbench.  The … Read moreRoubo Workbench: I Met the Devil…

A Quick Roubo Workbench Update

The Almost-Complete 2015 Roubo Workbench

With the base attached to the top, I was able to get the Roubo workbench flipped so I could finish the details.  Despite weighing nearly 300 lbs, I managed this myself.  The saw-benches are the perfect height for this operation.  You just need to go slow, and be careful.  I’m thinking about making a quick … Read moreA Quick Roubo Workbench Update

Roubo Workbench Build: Draw Boring the Base

A close up of the drawbored joints

I did a lot of research while designing my Roubo workbench.  There are many ways to bring everything together.  However, my favorite approach was draw boring the mortise and tenon joints.  There is no need for any glue, and the joint should stay tight for ages.  As of my last post, I didn’t think I … Read moreRoubo Workbench Build: Draw Boring the Base

Roubo Workbench Build: Leg Tenons the Hybrid Way – Video

Roubo Workbench Build: Tenons

I intended to demonstrate cutting the large leg tenons for the Roubo workbench build two different ways: by hand and with the aid of a band saw.  Unfortunately, my camera shifted while I was cutting the tenon cheeks.  Consequently, you’ll only get to see my poor cross-cutting skills today. Marking Out I like to start … Read moreRoubo Workbench Build: Leg Tenons the Hybrid Way – Video

Roubo Build: Rough Milling the Beams for the Bench Top

Rough milling large beams by hand, can be very intimidating. I had a few boards slip during glue-up and was afraid it would take forever to correct. Fortunately, a sharp jack plane with a cambered iron made quick work of the rough milling for the Roubo bench top. I started by planing with the grain … Read moreRoubo Build: Rough Milling the Beams for the Bench Top