Slumping pasta bowl?

Carla Fox · Post by **Carla Fox** » Fri Mar 05, 2004 1:51 pm

I am slumping a pasta bowl and gradually getting the results I want.
But I'm at a conundrum of do I let it soak longer or crank up the heat a bit.

The details:
My bowl is 10.5" across and needs to slump 1.5" BE glass
I'm touching bottom with my current schedule but want the glass to settle into the sides more.

My current schedule is:
300Â° to 1050Â° hld 5 min
9999 to 1250Â° hld 50 min
9999 to 960Â° hld 30 min

So should I soak longer or raise my temperature?

Thanks.

Carla

charlie · Post by **charlie** » Fri Mar 05, 2004 1:53 pm

the problem is the middle fell too quickly.

if you do this again, try 50 to 1250 instead of 9999 to 1250.

if it's slumped now, use more time. more temp may cause it to puddle.

Stephie · Post by **Stephie** » Fri Mar 05, 2004 2:48 pm

Carla, are you slumping an inch and a half piece of glass, or is the bowl 1.5" deep?

Carla Fox · Post by **Carla Fox** » Fri Mar 05, 2004 4:05 pm

Stephie wrote:Carla, are you slumping an inch and a half piece of glass, or is the bowl 1.5" deep?

I didn't make that very clear, huh? The bowl is 1/5" deep, the glass is just the regular 2 layers thick.

Thanks.

Carla

Carla Fox · Post by **Carla Fox** » Fri Mar 05, 2004 4:07 pm

CM Fox wrote:
Stephie wrote:Carla, are you slumping an inch and a half piece of glass, or is the bowl 1.5" deep?
I didn't make that very clear, huh? The bowl is 1/5" deep, the glass is just the regular 2 layers thick.

Thanks.

Carla

My fingers are all confused today. The bowl is 1.5" deep. Ack.

Stephie · Post by **Stephie** » Fri Mar 05, 2004 4:46 pm

Thank goodness!
I'd agree with Charlie, slow down

Cynthia · Post by **Cynthia** » Fri Mar 05, 2004 4:48 pm

charlie wrote:the problem is the middle fell too quickly.

if you do this again, try 50 to 1250 instead of 9999 to 1250.

if it's slumped now, use more time. more temp may cause it to puddle.

I'm with Charlie. The books say to slump fast (AFAP) from 1000 to 1300, but I think this is a silly schedule. The best results for me have come from dropping my ramp rate to 100 dph at 1000 and taking two hours to get to 1200. This works for a larger span of over 12", but for smaller pieces you may have to go slower, longer or hotter.

Try Charlie's schedule and I bet you'll get great results, but watch the piece when you bend it and see when it's done. That way you will learn the appropriate schedule for that particular mold.

Carla Fox · Post by **Carla Fox** » Wed Mar 10, 2004 1:34 pm

I did it using Charlie's suggestion of ramping up 50Â° an hour to 1250Â°. It worked like a charm. Thanks so much!

This board is the bestest!

Carla

charlie · Post by **charlie** » Wed Mar 10, 2004 1:52 pm

congrats. pictures?

i find that the wider the platter, the faster it falls at a lower temp. frequently, if i start at 1150 and go to 1225 at 50/hr on anything larger than about 10" wide, it's slumped all the way before i get to the top temp. the trick is finding the diameter and top temp ratio so that i top out at at the end of the slump time just as it's settling down to the bottom of the mold.

Carla Fox · Post by **Carla Fox** » Fri Mar 12, 2004 1:54 pm

Okay...here's a photo of the successful slump if I have correctly figured out how to add the picture. The glass is just clear, no purdy colors, as I just wanted to get my slump schedule right.

Carla

http://community.webshots.com/scripts/e ... ity=kJzGDR

Carla Fox · Post by **Carla Fox** » Fri Mar 12, 2004 2:03 pm

Try 2 at showing a photo.

http://community.webshots.com/album/124888643UcRuom

Brock · Post by **Brock** » Fri Mar 12, 2004 2:10 pm

It worked. You're on your way. Brock

Carla Fox · Post by **Carla Fox** » Fri Mar 12, 2004 3:57 pm

3rd try at posting a photo. Thanks Charlie & Brad for your help. Thanks to all others for your patience, with goobered tries.

Carla