White ring at sprue

[SiKBOY]

I also get a dark grey spot on my crowns at the sprue area on my eMax pressings. Using a zubler.
Any ideas?

 

[Car 54]

I'm not sure if you caught the 2nd page and missed this helpful answer on the 1st page? http://dentallabnetwork.com/forums/threads/white-ring-at-sprue.24346/#post-224546

 

[JDD]

I also get a dark grey spot on my crowns at the sprue area on my eMax pressings. Using a zubler.
Any ideas?

So far I've tried the one suggestion to make sprue 3.3 mm long. No more. Sprue to thickest area. It seems to work the best so far. Noticeable but much better. Still working on it.

 

[user name]

So far I've tried the one suggestion to make sprue 3.3 mm long. No more. Sprue to thickest area. It seems to work the best so far. Noticeable but much better. Still working on it.

Ive re-read the entire thread...no one has suggested using a sprue 3.3mm long.

What are you referring to?

 

[SiKBOY]

I think he meant 3mm diameter. Not length

 

[user name]

I think he meant 3mm diameter. Not length

Im not giving him that much credit. He said 'long'.

 

[SiKBOY]

Ive been using a 3mm sprue so I might use a 3.3mm sprue and see how that goes. I read that technical post that Patrick Coon wrote and it was very informative.
I only get a dark grey spot on my crown without the white ring around it. I'm not sure if I have the same problem with the OP.

 

[Car 54]

Same here, as I previously posted, gray but no real definite white ring. I think it only happens to me on the thicker monolithic HT ingots that I do all my posteriors in. All my emax coping are in LT's or Mt's, and press fine.

Maybe the fiber optic effect Patrick mentioned is more easily seen on HT ingots? I need to make sure I'm using his tips, along with trying user name's suggestions.

 

[JDD]

Im not giving him that much credit. He said 'long'.

Wow. Read user names post. It says he uses a 3.3 mm width sprue. And keeps the length shorter than the width. Chill pill man.
And I don't need credit any way
A direct quote is. "Keep the sprue short; shorter than the width. "

 

[user name]

My apologies if I sounded like a jerk in an earlier comment above. Im having a less than fantastic day.

I mean no rudeness.

 

[JDD]

My apologies if I sounded like a jerk in an earlier comment above. Im having a less than fantastic day.

I mean no rudeness.

Apology accepted. I'm trying to get rid of my problems too. Pressing is challenging. I just want a superior product. When I can't control it , it sucks. Been at it for four years and this suggestion has given the best results.

 

[Car 54]

JDD are you getting this on LTs, or HTs (like I am) or all?

 

[2thm8kr]

My apologies if I sounded like a jerk in an earlier comment above. Im having a less than fantastic day.

I mean no rudeness.

Don't sweat it amigo, we all have been there.

 

[user name]

Apology accepted. I'm trying to get rid of my problems too. Pressing is challenging. I just want a superior product. When I can't control it , it sucks. Been at it for four years and this suggestion has given the best results.

Can anyone recommend a good chill pill? Something preferably that goes with vodka.

 

[Car 54]

Don't sweat it amigo, we all have been there.

Absolutely, agree. It's a intense trade we're in, and at times it just doesn't let up.

 

[SiKBOY]

Same here, as I previously posted, gray but no real definite white ring. I think it only happens to me on the thicker monolithic HT ingots that I do all my posteriors in. All my emax coping are in LT's or Mt's, and press fine.

Maybe the fiber optic effect Patrick mentioned is more easily seen on HT ingots? I need to make sure I'm using his tips, along with trying user name's suggestions.

I mainly use LT Ingots mono and I get the grey spot.

 

[user name]

 

[CatamountRob]

A well developed sense of humor is the best way to keep from going bat $hit crazy in this business.

 

[Car 54]

View attachment 23108

Goes good with vodka

 

[user name]

User name...now available in 'Bat$hit Crazy'!



The resemblance is amazing.