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Bob Coyle

Member Since 06 Jun 2013
Offline Last Active Oct 17 2016 12:45 PM

Posts I've Made

In Topic: Lose The Sitter Your Opinion Counts

14 October 2016 - 04:15 PM

I just buy them on Ebay. They are cheap enough that I over spec the relay by at least 50% or more.  For a 17 amp kiln I get a 45 amp relay. My bigger kiln at 38 amps  is running a 50 amp SSR with a heat sink and cooling fan, located remote from the kiln. Even then, you can feel pretty warm air blowing out of the enclosure.


Never paid much attention to the brand.

In Topic: Lose The Sitter Your Opinion Counts

05 October 2016 - 10:14 AM

Addendum... I meant to say they drop off after they reach 50-60 C  I think that is about 120- 150 F and as Neil said, they have no moving parts or mechanical contacts, so they last a lot longer than the old bi metal duty cycle contacts.

In Topic: Lose The Sitter Your Opinion Counts

04 October 2016 - 06:37 PM

One thing I found out the hard way.... solid state relays ability to supply current ( amps) to the kiln drops off sharply after they get to about 50-60 F. Where ever you put them, make sure they are on good heat sinks and isolated from the radiant heat of the kiln...

In Topic: Wedging Clay

04 October 2016 - 06:24 PM

Hi Sara78


Your best friend as a beginner... other than all the friends you will make here... is Google and YouTube. Just go and search on "wedging clay" and you will have access to how all the people of the world approaches wedging. I got  190,000 internet links to wedging and 5390 on line videos on how people do it.


Just Pick the one that works for you. There is no right or wrong way . ceramics has been around for millennia and every aspect is still evolving.


To begin with, just use the clay out of the bag. When you develop scrap that you will want to re-use then you MUST wedge it to get the air out.

In Topic: The Only Absolutely True Rule For Potters. Pay Attention To This

24 September 2016 - 12:12 PM

Can't find the set of compass's I put away in a safe place that I can't member.