Ring casting (by alaric)

A friend has asked me to cast her some silver wedding rings. So I am adapting my aluminium casting experience to silver...

The thing to use for silver moulds is cuttlefish bone, which is soft enough to easily carve into shapes, but can withstand the heat of molten silver. For a single pour, at any rate.

In order to get a repeatably round shape of the correct diameters for the two rings, and so I can quickly carve new moulds if my pouring fails so I can try again, I decided to make boring tools that carve ring shapes of the correct diameters.

As you can see, they're made from nails, hard soldered together, and ground to a cutting tooth at the end. The central spike goes down a guide hole I drill in the cuttlefish in advance.

The tool needs to come down exactly perpendicular to the flat surface of the cuttlefish (made by sawing one side off and then sanding it flat), so I made a special jig to hold them:

Then it's just a matter of fitting the tool in a chuck and bringing it down. I first tried rotating the tool by hand, but the result was a bit rubbish, so I bit the bullet and just turned the Dremel motor on, which produce a quite perfect circle.

I made a couple of moulds, each with a matched flat cuttlefish to go on the other side. I had to carve channels for the silver to flow in by hand, using a screwdriver for rough gouging and a craft knife for the finer parts.

The silver was heated by blowtorch, in a refactory cup called a scorifier:

But first I had to prepare the silver I was given - in the form of a coin, which I felt a bit bad about sawing in half:

I melted half of the silver and poured it into the first (roughest!) mould:

When I cracked it open, it seemed I'd not used enough silver, but everything had otherwise gone well:

So I pulled the incomplete casting out, crushed it up, and added the other half of the silver, and gave the second mould a go. Here's a picture of it with the channels cut, before I clamped it:

I put it all together and got ready for some melting:

But this time, as soon as I started pouring, the silver suddenly froze on me, so hardly anything went into the mould:

It seems that the larger mass of silver wasn't heated up quite as far as the first pour had. I need to rearrange my firebricks to make a better forge to heat the silver in, so heat loss is slower, I suspect...

Spotty Dotty Madness (by sarah)

Children In Need Jean (by sarah)

I knitted the bandage - it was supposed to be red bobbles on white but was a nightmare to knit and hasn't come out exactly how I imagined but Jean is over the moon with it and as a first attempt at bobbles I think it's great 🙂

Poor Hydro-Puss (by sarah)

We are currently awaiting info from the vet having approved an operation to wire Hydrogen jaw up and to remove maggots from her feet.

As some of you know she has been missing for 3 weeks now and we have been searching high and low for her. Today - the day Alaric took the car in to have the brakes fixed Barbara turns up and says she's found what might be Hydrogen at the top of the road.

She helped me get her out of the boot. The little thing was so light and smelt odd and it appeared to me that half her face was missing - but not in a fresh way - in a sort of healed kind of way.

I put her in the bathroom meaning to feed her and clean her up she seemed so happy to be home but then I thought about it and wondered how I was going to get to the vets as Barbara had left saying let her know if she needed taking to the vets but that it wasn't an emergancy.

Inge the lady who comes to do the garden came and asked me if she could take us to the vet - and I said yes but realised I couldn't go. Even if I asked another parent to get Jean from school we had left the car seat in our car which is in a garage being fixed.

She my poor little cat who was so happy to see me and obviously needing help - I bundled into a box (the cat basket) and handed to some else to be taken to the scariest place for cats with the knowledge that I will likely not be hearing that meow again - but I had to because either way the vet is who can help her.

My poor little cat - I still remember us getting the two girls - http://www.snell-pym.org.uk/archives/2006/07/07/kittens/.

It’s All NaNo’s Eve (by sarah)

It be that time of year again when all the nut balls come out of hiding! That's right it's NaNoWriMo time again - at the witching hour on this All Hallows Eve a bizar and eclectic ritual will take place - writers will begin typing, scrawling or dictating in ernest in the hope that this year they will make that word goal. That they will be the Nanoer of the finished first draft - I put it to all fellow nanofanatics new and old - lets get writing the madness has begun.

For those of you who are interested I'm 5affy on the forum (that's Saffy but with a five instead of the ess). Or @TheMonsterBlogs on Twitter and the blog I will be blogging upon is Purple Monster - and of course I'll be doing the picture book ideas as well which can be found on Orange Monster.

Jeany is also joining me in this this year! (She has the last two years - first with dictating stuff to me and then last year with her Nano note book in which she stuck stickers, wrote stuff, drew pictures and made collages from mags.)