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Monday, February 7, 2022

Pepper Grinder - #1 The Beginning, Glue-up & Rough Turning

Sometime prior to 2002 I made a laminated walnut and cherry salt and pepper set on the lathe that has been in use ever since.  There has been only one problem with the set and that is with the pepper grinder.  It works fine for individual use but when grinding a lot for cooking my wrist gets tired.  I tried modifying another grinder but it was not much better so we continued to use it and complain every time a lot had to be ground. 

That all recently changed when looking through a woodturning catalog I came across a set of good-looking stainless steel pepper grinding hardware.  It was only about $10 so I ordered it along with some other items that I needed.  Here is the hardware and the catalog photo.

The new grinder could have been made out of a laminated block matching the originals.  It would have been close because I still have a piece of the walnut.  However, the new cherry would have never matched the natural darkening of the 20+ year old wood.  What I decided to do was match the shape of the old set but reverse the woods.  The original pieces have a cherry body with walnut accents.  For this piece I will reverse that.  Here is the stock that includes the part of the original walnut plank.

To make the turning blank will require three different glue-ups.  The first two are identical, two thick walnut pieces with a thinner piece of cherry sandwiched between them.  Here they are glued and clamped up.  The 6-mil polyethylene plastic sheet is to keep the clamps from getting glued to the wood and the blank from getting glued to the workbench.

After an overnight cure the clamps are removed to reveal the glued-up blocks.  Here is one of them and you can see where the dried glue got squeezed out.  Because of the plastic sheet it could not get cleaned up while being clamped.  The paint/glue scraper will be used to remove the excess glue.

The glue needs to be removed from both sides before the piece gets run through the thickness sander. That’s so the glue doesn’t get transferred to the sanding drum gumming it up which in turn can cause a burn mark in the wood.  Anyway after a few passes all the glue is removed and the piece can be run thought the sander to remove any scraper marks and make sure the surface is flat.

Next the two glued-up blocks get glued together with a cherry spacer between them.  Here it is all glued and clamped up.

Once the glue cures the clamps are removed and any glue gets scraped off.  Unfortunately, when scraping the excess glue off I got a little carried away and slightly rounded a couple of the edges a little.  Because this block is going to get turned round it could have been left that way and not caused a problem.  However, only about a third of the block is needed for the pepper grinder and the rest will be set aside for some future unknown project.  Because of that I wanted the block to be square and flat so a flat reference surface is needed.  To get that surface a shim consisting of a strip of playing card and a single layer of masking tape is put on the low side to bring it up level.  That is shown in the photo below.  In use the tape goes down on the feed belt and opposite side gets flattened by the sanding drum.  When it’s flat the shim is removed and that face of the block gets flattened.  As you can see there is knot on one corner of the block.  It probably won’t be a problem as I think it will be in an area that will be cut away when turned to a cylinder.  At least that’s the plan.

Laying out the cylinder and how the knot will intersect that is next.  The top photo shows the edges of the knot transferred to the top and how they would intersect with the cylinder.  The bottom is a closer view of that intersection.  Since the drawn cylinder is a little larger than the diameter of the finished pepper grinder It looks like the knot will get cut away.

Cutting off the pepper grinder blank is next.  The rest of the block on the left will be stored away with my other blocks for something else.  Maybe another salt/pepper set as a gift???

Using the bandsaw to rough out the cylinder is next.  When making this cut, I noticed a bit of burning which when making tight curves is not uncommon but here it’s more than usual.  Also, more pressure was needed to make the cut than normal.  This blade has cut a lot of material in the past two years including ripping a couple pieces with nails that were hidden damaging the blade.  All in all it’s time to retire that blade and put on a new one.  On the lower left of the photo there are two cutoffs laying down.  They are from the corner where the knot was and got completely cut away so that’s not going to be a problem.

With the blank mounted between centers in the lathe the turning can start using a roughing gouge.

The rough turning down to a smooth cylinder went well as both walnut and cherry turns really nice.  However, when I stopped the lathe to check on the diameter I discovered a little crack on one edge of the blank circled in red in the top photo.  Fortunately, it didn’t look very deep and a little more turning cut it away so it ended up not being a problem but I have had cracks like that show up and end up being a real problem.  With that concern out of the way I finished up the rough turning taking the blank down to a smooth consistent diameter a little oversize so the drilling for the grinder’s hardware could start.

Next Up – Drilling & Turning to Shape

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