@Bill It occurs to me that you might want to reduce the transmission of vibration from the machine to the fabric of the house.  We had that problem with DS's study desk, which I made out of a sheet of softwood taken out of the kitchen when we upgraded it, and four screw-on legs from B&Q.  Behind the desk we installed some of that shelving system where the verticals are screwed to the walls and the shelf brackets clip in, but we had them already so didn't buy new and they were a bit too long, meaning the desk banged against them when he was hammering away on the keyboard or if he moved stuff around.  We solved the problem by using those felt pads you put on the legs of wooden furniture to stop it marking hard floors, which are available for pennies in all sorts of places.

Maybe putting them on the feet of your desk and, if the furniture vibrates when you're machining at speed, on the sides of the worksurface where it abuts the walls?  I wouldn't put them on the feet of the machine itself as it will 'walk'!

No, just A Sara SIlverman.

I did wonder, given your robust response to the Quilt Police!  The other Sara S would have lambasted them too :-)

@Starryfish Your offering knocks mine into a cocked hat!  Stunning :-)

@Bill Do not, repeat DO NOT, try this:
https://www.youtube.com/watch?v=qKDSaNmB0rs

Good grief - why???  Just because you CAN doesn't mean you SHOULD.

Looking good, @Bill !

My only comment, based on my own tiny sewing corner, is that you might want to swap the trolley to the left of the machine with the drawer unit to the right of your cutting table.  That way, you will have space to support bigger sewing projects without knocking things off the trolley.  Suck it and see, though

So the hex pullover is done.  Things I learned:

* The idea of this thing is that the armscye measurement determines the length of the hex sides so the deeper the armhole, the longer the sides, but while in the make-a-hexagon stage, no shaping is possible, consequently it is very boxy.

* Having joined the sleeve seam, which runs along the top of the seam from the shoulder, it is possible to add more rows to lengthen the sleeve, at which point the sleeve can be tapered, which is a good thing.

*  Most of the instructions online tell you to add width to the back by adding rows up and down the back edges, which is fine, but also to add width to the front by doing exactly the same, which in my view is not.  To do so gives a simple slash neck and I decided to apply some pattern cutting knowledge to giving the front neck a bit of a scoop.  It worked to my satisfaction.

* The overall width of the garment is determined by whichever of your bust, waist or, if you're making the garment that long, hip measurements is the largest.  Like I said, boxy, and I didn't fancy adding decreases below the bottom of the hex panel   [ You are not allowed to view attachments ]  for obvious reasons.

*  I took several goes to invent a neck edge that sat neatly and it's now a crew neck with shaping at the front.  The edges are all done with two rows of double crochet (single crochet in US terms).  There are lots of elaborate edges possible but on this garment I felt they wouldn't be right. 

Anyway, see what you think.

@Flobear I'm almost finished my crochet hex cardigan.  Took a couple of days to figure out how it worked until I realised it's a six-sided shape with right-angle corners.  Hence the hexagon doesn't lie flat but when you fold adjacent corners together, magically the right angles assert themselves and you have half a jacket!  Genius! 

Anyway, I'm adding length to the bottom then need to finish that edge and the edges of the sleeves, weave in the tail ends and steam/block and then it will be good to go.  I'm making it in West Yorkshire Spinners' Colour Lab yarn in Frosty Blue with the edges done in Deep Teal.

One last thing, get your mum a pair of bent-nosed tweezers and encourage her to use them if, eg, pins get stuck under the presser foot, rather than use her fingers.  One false move and it's an afternoon at the Minor Injuries clinic getting the needle removed (as I discovered five or six years ago to my cost).