@Torren it is probably best to create a new thread for each workshop instead of modifying old threads. That would keep the conversation relevant. This one is getting very long and for people arriving here for the first time it may be confusing to read. Dont hesitate to create new topics/threads. Just my two cents
@Beth The Wholesale Graphix sales catalouges are in the white drawer in the Design Lab. I just email my order to email@example.com, they send an invoice to my email, then I email them money to: firstname.lastname@example.org
They ship over night. Tell them I (Vaughn from Kamloops) referred you.
So I tried to sandcast a bismuth top tonight… Some successes and failures there.
I laser cut a 6-spoked wheel with a 5mm center hole, and two “rings” to go above and below the rim of the wheel, all out of 3mm ply.
I took a piece of brass bar stock, turned it down to 5mm in the center (to give the wheel something to grip on, and rammed up a little mold to cast into. Here’s my first mistake…
If you focus the laser on the top of your plywood, the cut looks like this:
This automatically creates a tiny bit of draft angle for your form. If you think to put the form in the sand the right way up. Put it in narrow side up (like I did) and it’ll pull out all the sand inside the features. I remade the form, and tried casting, but should have been smarter about not pouring directly over the brass part. Going to take some effort to cut the handle out of its bismuth tomb. Anyway I’m going to try to walk someone through some interesting stuff tomorrow. At least enough that they can start doing some basic metal cutting operations anyway.