Spinnekop (windmill) #23: De schroef

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Blog entry by JobK posted 05-08-2022 06:00 PM 519 reads 0 times favorited 4 comments Add to Favorites Watch
« Part 22: Koningsspil Part 23 of Spinnekop (windmill) series no next part

Last part was a very simple part. Now lets make the most difficult and challenging part of this mill: the “schroef” or “vijzel”. A Archimedes screw.

Lets start with a simple “beam”

Now turn it on the lathe

And then i realize that i made the round parts to small…....
Time to make a new one.

A quick test fit to see if the barring surface is in the right spot

Adding little metal strips called “schenen” to make the bearing surface more durable

Adding metal bands to keep everything in place

Now lets layout the screw

The screw has 3 “gangen” (compartments). So I divide the circumference in three and add a string to give me the place of the line i need.

Scribing the rebate with a compass

Now i can begin making a rebate

Adding the bottom bearing

Adding a nail as start of each compartment called “slag ijzer” (beating iron)
This iron is placed so any driftwood floating into the screw will not damage it.

Some calculations to get the dimensions of the segments that make up the compartments

These are very small pieces with a tenon on a angle

And now the fun part: adding all the segments…
First a bit of a dry run.

Now let use some glue

Keeping things nice and square

Start the sanding

Making the outside round

Test fitting it to the “schroefbak”

Needs a bit more

Fitting the bearings

Adding the “schroefrad”

All finished

-- Job, The worst wheel always creaks the most

4 comments so far

View Redoak49's profile


5584 posts in 3445 days

#1 posted 05-08-2022 08:10 PM

Amazing !

View JCamp's profile


1738 posts in 2007 days

#2 posted 05-09-2022 12:02 AM

Man that’s insanely good work.

-- Whatsoever thy hand findeth to do, do it with all thy might

View Dutchy's profile


4370 posts in 3625 days

#3 posted 05-09-2022 06:38 AM

I enjoyed it Job.


View hookfoot's profile


421 posts in 3406 days

#4 posted 05-12-2022 12:06 AM

Amazing and beautiful. It is a way over my head. But i love your project.

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