Router Plane

Monday, October 17, 2022

Jointer - #3 The Handle, Finishing & Assembly

Laying out the handle is done with a half-pattern.  It’s used to draw the left half then flipped over to draw the right half.  This gives me a perfectly symmetrical layout.  While the original piece had a lot of cracks and some knots the early planning I did worked around them.

Cutting the handle out is done on the bandsaw.  Because I have a ½” wide blade on the bandsaw I need to make some relief cuts as the inside curves are too tight for that wide a blade to make.  Those cuts are shown in the top photo.  I could have changed the blade from the ½” to ¼” which would have let me make the cuts in one pass.  However, it takes a while to change the blade and reset the guides so for three handles it’s not worth it.  The bottom photo shows how the handle’s larger outside curves can be cut in one pass.

Once the handle is cut out the outside face gets smoothed using the large disk sander.  The inset is a closer view that shows the sanding marks.  Because the sandpaper is pretty coarse some additional sanding with the ¼ sheet sander will be needed to get rid of those marks. 

Sanding the inside curve of the handle is done using the oscillating drum sander.  Fortunately, the drum has different grit sleeves available so I can start with a coarse grit for shaping then switch to a finer grit which gives a pretty good finish.

Making the base plate out of ¾” thick oak plywood is next.  All went well until the final rip on the last base.  That cut edge had a void in one of the plies as shown in the top photo.  If I had another piece of the plywood I would have just tossed this one but the only pieces available are good sized and I didn’t want to take a small piece out of them.  The fix is to glue in a patch.  That starts by using the table saw to cut a slot as wide and deep as the void the full length of the piece.  The setup to do that is shown in the bottom photo using the cutoff scrap from the bases.

The slot gets filled with a spacer made from the cutoff when the handle blank got ripped on the bandsaw.  It was just a tiny bit too thick but was milled to just the right thickness using the thickness sander.  After being rough cut to width and length it gets glued in the slot.  Here the top photo shows what it looks like ready to be trimmed on the table saw and the bottom photo shows the setup for ripping.  The ends are cut using the chop saw.

With the ends and the edge trimmed you can’t even tell there was a patch used.  The bottom two photos is a closer view with the patch identified by the red arrow.

Clipping the corners of the base is next using an adjustable jig set at 45 degrees.  The top photo is with the jig and saw set up and ready to go.  The bottom photo is after one corner has been cut. Flipping the board end for end then top to bottom gets all four corners clipped with one setup.

Next the handle gets centered on the top and its feet get traced onto the base.  The positions of the screws that will be used to attach the two get laid out followed by drilling pilot holes for the screws.  That’s been done in the top left photo.  The right photo shows the base flipped over and a stepped drill bit being used to countersink the hole.  This will allow the screws to be run in anchoring the handle in place while being below the surface of the base.  I like using Kreg® screws (bottom left) because the head has a square drive rather than a Phillips or slot.  The screw is also case hardened and has a self-tapping tip so it’s less likely to spit the wood when driven in.

Here is a side and bottom view of the push block with the handle screwed in place.  After this test fit the piece is disassembled so work can continue.

Rounding the edges of the handle is next.  That’s done with the router and a round over bit.  Here the top face has been done along with the outer edge of the face that’s down.  The bottom inside edge still has to be done.

After the handle’s edges are routed it gets finish sanded along with the base.  The base also gets its top edges softened.  Last before finishing is to mask the areas where the handle and base come together.  The tape will keep those areas clear of finish when sprayed.  I want bare wood where the handle and base come together so there will be a good glue joint.

Spraying the parts with lacquer is next.  The photo below shows most of the items used; lacquer thinner, lacquer and various mixing bottles.  There is also protective gear consisting of a mask with N100 filter cartridges that filter out both organic and acid vapors and gloves. 

This photo shows the spraying setup where a base is on yellow painter’s triangles set on a lazy susan so the part can be easily turned to get to all sides.  The handle gets sprayed while I hold on to it using the screw.  Wrapped around the screw is wire used to hang the handle from a support.  After the second coat of lacquer is applied the surface gets sanded with 600 grit paper to remove any dust nibs followed by the final finish coat.

After letting the finish cure for a few days, the pieces are wet sanded with an 8,000-grit pad and the masking tape is removed.  Below is a before the tape is removed and an after.  It’s easy to tell where the wood is still unfinished.  The letter "C" on the right is used to match the handle to the proper base.

Assembly consists of gluing the handle to the base and running in four screws.  Last, is to glue a slightly oversize piece of 120-grit sandpaper to the base using spray adhesive.  The sandpaper provides some grip between the push block and the piece to be jointed.  Once applied the push block is put in a vice to put pressure on the glue joint overnight.  In the photo you can see masking tape around the base’s bottom.  This keeps the adhesive overspray off that edge.

After curing the tape gets removed and the sandpaper is cut flush with the base’s edges.  Below are the three completed push blocks.  The top left one is different than the other two in that it has a small lip on the left end which provides a positive stop to the trailing end of the piece being jointed.  The two on the right are the same except the bottom one is a little narrower.

Last is to make and mount a small shelf on the jointer to hold the push blocks.  It’s made out of ¼” plywood with a ½ square rim of oak.   Here is what that looks like.

This competes the work on and related to the jointer.  My only problem is I still have not found a good home for it in the shop.  So, for now it gets moved around depending on what equipment is being used.

Next Up – Wood Hold Down - #1 The Beginning 

Below is a drawing of the Hold Down.




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