Car 54
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lol..good one
AllJDD are you getting this on LTs, or HTs (like I am) or all?
I'm going to try a6 gauge. If the theory of length be less than width then I'm going 6 at 4 mm and make the length 3.5.
I'm going to try a6 gauge. If the theory of length be less than width then I'm going 6 at 4 mm and make the length 3.5.
Those logs going down the tube will have more room to manouver. It's their theory. We will see tomorrow. I will post the results for you if you would like. I'm trying anything.
Let me be sinical for a minute. Emax sucks and we have to sell the product. This is probably why they came up with mill Emax. To avoid what they couldn't fix but make a million off of. Ok I'm done. Back to patchwork quilting on the emax. I hate giving a used car to someone who pays for new.Hey JDD, the 6ga at 4mm is overkill. Won't eliminate it. It's something we just live with and "hide" it by sprueing all posteriors on the lingual. You do want to sprue to the thickest , so just beef up a lingual cusp if you have to and contour back after press. Stay with 8ga and 3mm length. Your connection to the crown should be like the top of a funnel, not constricted so the "logs" flow better. And sprue angle is key too.
After stain and glaze the spot appears to disappear, or blend in. Most times I would say it's not an issue.
Now if you want to try anything, we haven't talked about the Super ring for a while.
.....and that too!I'm pretty sure the came up with emax CAD to eliminate all of the time and archaic steps involved in a finished crown and add another product to sell.
It's not your pressing, it's the nature of the crystalline structure of the material. Picture a bunch of logs flowing down a river. That's the way the crystals are and flow parallel to the sprue. Gives kind of a fibre optic effect where you may not like it. Try spruing from diso- lingual cusp areas and certainly avoid mesio buccal placements. On anteriors, straight down from incisal and that can lead to some interesting effects, not problems. Hope this helps you. Physics of the material, not your techniques.Does any body know how to get rid of white ring with dark center at sprue area of all presses. I've talked to techs
Etc. tried every thing that I know of. Doesn't matter if it's LT HT or MT. Can't get rid of it. I use a Zubbler press oven.
Logs floating down a river you say? Sort of like a municipal waste water system then?It's not your pressing, it's the nature of the crystalline structure of the material. Picture a bunch of logs flowing down a river. That's the way the crystals are and flow parallel to the sprue. Gives kind of a fibre optic effect where you may not like it. Try spruing from diso- lingual cusp areas and certainly avoid mesio buccal placements. On anteriors, straight down from incisal and that can lead to some interesting effects, not problems. Hope this helps you. Physics of the material, not your techniques.
Dave
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I sprue to the same area you indicate and the thickest point on posteriors but still get that ring.
Now what. I've been at this for four years. Same advice. Same results. Frustrated
Patrick, those sprues in the pdf look quite long. It's a lot longer than what I am doing. Are there any other reasons why we are getting that grey spot at the sprue junction?
Do you have any pictures or how you would sprue a bi or a molar?
I just tried my own technique. Finally no nothing. Turned out amazing. I did it on two cases. Checking to see if it is consistent.JDD,
I'm sorry for your frustration. Can you take some clear photos of your sprueing and the results. Maybe by seeing exactly what you are doing and the results, I can make some other suggestions. I would love to help you solve this issue.
Should I transition to a 200 ring and slant it out into that zone or is 100 ok. Is the heating area causing my dis colorization.View attachment 23145 Had this filed away, IVO used to issue these updates.