Thrust bearing and shroud for the Paramo vise

A couple of weeks ago, I overhauled the Paramo vise and ordered a thrust bearing to reduce the tightening torque on the crank handle. That requires a shroud, as the bearing is a 3 part assembly with an open race that would attract grit and filings.

Here's another job for the 3D printer. I've held off making this on one of the CNC lathes, as printing it would be significantly quicker and easier while being perfectly adequate for the application. 

Modelled up the assembly in Fusion and created the shroud. This will fit over the bearing and the big end of the crank screw, being held in place with a large o-ring.

Exported to the Orca slicer and uploaded it to the printer. Print time 5 mins.

Finally, I've lost the large washer that sits between the spring and the split pin. So I can print one of those too. 19.5mm ID, 30mm OD, 6mm thick.

And then, assemble the parts onto the moving jaw, using cable ties to keep the spring compressed. Then cut the cable ties, grease the bearing, screw and ways and finally fit the moving jaw to the main body.

Phew. Finally.

Don't forget the o-ring:

Ooof. That one snapped. Try again:

Job done. I may be required to mount it on one of the benches and put it to use.

Dust extraction adaptors - 3D printed

The Titan planer thicknesser comes with a 100mm dust extractor hose port. My shop vac has a 35mm nozzle. Sounds like a job for a 3D printer?

This is a pretty commonplace requirement and while I could simply by something from Screwfix or Amazon, this needs to be made in Fusion and on the 3D printer.

I found a parametric model on Thingiverse that should do the trick:

It's created from 4 sketches, each a circle representing the start and finish diameter of the inlet and exhaust cones. The shape is then formed by lofting, then shelling.

Here's the adaptor for the planer thicknesser:

The parameters are a bit strangely named but doesn't take long to figure out. I renamed them to "Inner" and "Outer" diameters, as the author clearly assumed the adaptor would always be used on the outside of the mating ports on the vacuum hose and power tool. That's OK for the Titan thicknesser but not for the Makita belt sander.

And for the belt sander:

For this tool, the (male) adaptor fits into the (female) port of the machine. So I defined the ID of the small end as the inner diameter of the port minus twice the wall thickness.

Let's flash this up once we seem to have a stable setup established.

Here's Benchy. Looks pretty happy, so let's try the smaller adaptor to start with. 

First, export the Fusion model as a 3D printable STL file, then import to Orca Slicer. 

Finally, slice the model, connect Orca Slicer to the Elegoo over wifi and upload it to the machine. 

Then start printing. Looks as if it will take about an hour:

Here's the sander adaptor on the Makita sander:

...and the other adaptor on the thicknesser:

That will do for now!

Parquet - or par-chaos?

My wife nipped out for a few things a week ago and in that time by the time she got back, The Stupid Fat Bloke had lifted the carpet in the front hall. Then the underlay. Then the lovely 1960s linoleum tiles (black, with some red, yellow and white). And finally revealed the original parquet floor. It's in pretty good nick, considering, although there are large gaps where previously there was a toilet and some vandal also lifted blocks, filling the gaps with screeding.

Hmm. Lovely, lovely linoleum 

These turn out to be Appalachian Oak, from Ritter of West Virginia, USA. It seems that they were quite well known back in the 1930s when this house was built, although it seems surprising they didn't use British flooring, as there must surely have been plenty about.

One area that lacks original parquet is where the kahrsi used to be, under the stairs:

New joists:

...and 22mm plywood:

The new / old (recycled) blocks have arrived. Cut down to the same dims. Looks as if they cam from and old school hall or gym:

Reproducing the original layout pattern:

The floor sanders have arrived. Start with the edges:

Before lifting the loose blocks I need to refix, out with the chalks. Don't want to lose their places.

These ones made it back home ok.

Ditto:

This will take some time to resolve......