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Crib for Granddaughter #3: Holes, Holes, Holes

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Blog entry by GrumpyCub posted 11-03-2020 10:37 PM 501 reads 0 times favorited 1 comment Add to Favorites Watch
« Part 2: Ship Lap Day Part 3 of Crib for Granddaughter series Part 4: Building and Installing the Mattress Support »

This post likely will not be as exciting for the casual follower, it basically covers the drilling of numerous holes. The crib has two sets of holes that need to be drilled at this point.

Set #1 – Mattress support bracket holes.

The inside of each leg will receive 4 holes. A brass insert will be inserted into each hole so that a bolt can be threaded in to hold the mattress support.

Here I am just showing the holes drilled into the rear legs.

This picture shows the corresponding set of holes on a front leg when the crib is assembled.

Set #2 – Bolt holes and Cross Dowel Holes

Even though the crib is assembled with mortise and tenon joinery, I want it to be possible to disassemble the crib for storage. To do this, the ends will be secured to the headboard and foot board with cross dowels and bolts. This part of the build has had me the most nervous.

As you can see, a bolt hole has to pass through the front of the leg, into the tenon of the end panel rail. At the same time, a hole is drilled into the bottom of the rail to receive the cross dowel. These two holes must intersect, be perpendicular, and be co-planar. Not an easy feat. In fact there are drilling jigs sold just for this operation.

After much thought I realized I have a tool that will simplify this a great deal. I own a Shopsmith. In this case the advantage is that I can drill horizontally rather that just vertically as with a drill press. So…

This picture shows how I assembled the leg to the end panel so I could drill through the leg into the rail at the same time.

Levels are used to ensure straight drilling.

Before and after shots of the horizontal boring operation.

From here I transferred points in order to drill the cross dowel holes on the underside of the rail.

And when it was all done…

So there are 8 bolts, one at each corner than will hold the assembled crib tightly in it’s mortises.

Thanks for looking!



1 comment so far

View htl's profile

htl

5564 posts in 2374 days


#1 posted 11-06-2020 11:40 PM

It’s coming along nicely, just love all the pictures of it coming together.

-- An Index Of My Model making Blogs https://www.lumberjocks.com/htl/blog/130264

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