Email or username:

Password:

Forgot your password?
Joshua's posts Post Back to profile
Top-level
Joshua Barretto

I completely forgot to post this. Last week I made a mug and fired it.

Results:

- Temperature got up to 1,400 °C, higher than the melting point of iron. Far too hot!
- Using a fan to force air into the bottom is unreasonably effective
- I did a very stupid and wrapped the pottery in foil beforehand (to avoid scorching). Predictably, the foil melted and infused into the pottery. Results are not pretty.
3 February at 16:41 | Open on social.coop
6 comments
nadja

@jsbarretto I mean you have a high-temperature probe already, go build a PID-controlled fan :P

3 February at 16:43 | Open on mastodon.chaosfield.at
Joshua Barretto

@dequbed I've already started making plans :)

3 February at 16:58 | Open on social.coop
nadja

@jsbarretto I'm looking forward to that, take plenty photos ;)

3 February at 17:04 | Open on mastodon.chaosfield.at
Joshua Barretto

Over the week I made another mug. Much better formed. I fired it today and the results are quite pretty. Unfortunately I had very little charcoal left and I couldn't fire it for more than about 45 minutes, which is nowhere near long enough. It's since broken :( Also, not nearly enough glazing. Lessons have been learned, however!

One of those lessons is to buy a better quality thermocouple that won't melt 350 °C below its rated temperature.
3 February at 17:05 | Open on social.coop
Workshopshed

@jsbarretto oh yes, charcoal plus fan makes for very hot temperatures

3 February at 17:25 | Open on mastodon.scot
Joshua Barretto

@Workshopshed Indeed, and the more air you can throw at it, the cleaner it burns: there was almost no (visible) smoke coming off the thing at all!

3 February at 18:00 | Open on social.coop
Go Up