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Dental Wax
- Thread starter ChuckR
- Start date
- Replies 34
- Views 12,670
Gordon B. Clarke
Banned
- Joined
- May 29, 2010
- Location
- Denmark
1. What to you are "small spaces"?
2. What do you use to make chamfers and radii?
3. Do you make singles or several?
A sketch or drawing of what you are dealing with would help. Doing what you are doing would suggest you have a microscope or projector.
plastikdreams
Diamond
- Joined
- May 31, 2011
- Location
- upstate nj
Silly putty...works great
sfriedberg
Diamond
- Joined
- Oct 14, 2010
- Location
- Oregon, USA
plastikdreams, how do you remove the Silly Putty without distorting the heck out of it? Do you freeze it with canned air blast or something? The point of this exercise is to get something you can measure or compare to a gage, presumably with some degree of accuracy, and I've never been able to pull or peel Silly Putty off anything without at least a 5-10% stretch or distortion.
cmccull166
Hot Rolled
- Joined
- Mar 29, 2013
- Location
- NW Pa
I have used a 2 part auto body filler Kromate (I believe) it hardens in 15 minutes.
I just hit the edges on the side of a grinding wheel so it shows up in a comparator. use a mold release or even penetrating oil so it wont stick .
It also works well when you kill your only setup part I just build up that surface and I have a go at it again.
But I suppose JB weld would work also.
I just hit the edges on the side of a grinding wheel so it shows up in a comparator. use a mold release or even penetrating oil so it wont stick .
It also works well when you kill your only setup part I just build up that surface and I have a go at it again.
But I suppose JB weld would work also.
plastikdreams
Diamond
- Joined
- May 31, 2011
- Location
- upstate nj
It doesn't stick and holds it's shape if you are not a gorilla with it
. I used it all the time when finishing mold cavities. When we had to test large areas or full cavities we used 2 part epoxy. You could melt wax into there but why, another option is dental amalgum. Either way you have to dam it or it's gonna make a mess.
This is more of a general inquiry for checking inside chamfers and radii. I do have both an optical compairator and an OGP Smartscope. I am just looking for other alternatives to cutting parts in half to check the radius or chamfer at the bottom of an inside bore. When I say "smaller spaces", I am usually dealing with bores smaller that .250".
Larry Dickman
Titanium
- Joined
- Jan 30, 2014
- Location
- Temecula, Ca
This is what we use.
https://www.pattersondental.com/Supplies/ProductFamilyDetails/PIF_70202
Just light it with a bic lighter, press it in. It'll cool and be hard in a couple seconds.
https://www.pattersondental.com/Supplies/ProductFamilyDetails/PIF_70202
Just light it with a bic lighter, press it in. It'll cool and be hard in a couple seconds.
plastikdreams
Diamond
- Joined
- May 31, 2011
- Location
- upstate nj
if its down in a bore that small silly putty will be of no use lol.
Gordon B. Clarke
Banned
- Joined
- May 29, 2010
- Location
- Denmark
The reason I also asked about quantity is that it might be easiest just to make a drill or tool with the correct chamfer/radius as that'd be easy to check.
John Garner
Titanium
- Joined
- Sep 1, 2004
- Location
- south SF Bay area, California
ChuckR --
In times past, plaster was commonly used, and it works pretty darn well as long as it's not cast into undercuts. Plasters and their kissing-cousins, gypsum cements, expand when setting. So-called Tooling Plasters such as Hydrocal B-11 have nearly-negligible expansion (from old memory, in the neighborhood of 1/2 thousandth of an inch per inch of thickness), and hardware-store Plaster of Paris expands quite a bit more, but has the advantage of being readily available in small packages.
Changing the plaster:water ratio does change the expansion ratio, but some situations require mixing to an almost-putty consistency while others require a fluid mix.
A couple of additional thoughts: 1. The old-timers often used sisal or excelsior batting dipped in pancake-batter-consistency plaster to cover large areas quickly. The batting also reinforced the plaster, making the cured cast a lot easier to handle. Scotch-Brite-type non-woven fiber -- including floor-buffer pads -- will serve a similar purpose, and is a lot easier to find in today's world. 2. A Zip-Lock-type plastic bag partially filled with plaster can often be used as a "liquid shim" to stabilize a large casting or weldment that doesn't want to bear evenly on a machine table or floor.
John
In times past, plaster was commonly used, and it works pretty darn well as long as it's not cast into undercuts. Plasters and their kissing-cousins, gypsum cements, expand when setting. So-called Tooling Plasters such as Hydrocal B-11 have nearly-negligible expansion (from old memory, in the neighborhood of 1/2 thousandth of an inch per inch of thickness), and hardware-store Plaster of Paris expands quite a bit more, but has the advantage of being readily available in small packages.
Changing the plaster:water ratio does change the expansion ratio, but some situations require mixing to an almost-putty consistency while others require a fluid mix.
A couple of additional thoughts: 1. The old-timers often used sisal or excelsior batting dipped in pancake-batter-consistency plaster to cover large areas quickly. The batting also reinforced the plaster, making the cured cast a lot easier to handle. Scotch-Brite-type non-woven fiber -- including floor-buffer pads -- will serve a similar purpose, and is a lot easier to find in today's world. 2. A Zip-Lock-type plastic bag partially filled with plaster can often be used as a "liquid shim" to stabilize a large casting or weldment that doesn't want to bear evenly on a machine table or floor.
John
sfriedberg
Diamond
- Joined
- Oct 14, 2010
- Location
- Oregon, USA
You can still find coarse batting, or equally good, coarse webbing, at fabric stores with upholstery supplies. Probably fallen out of mill supply catalogs, but still current in the furniture business.
adh2000
Titanium
- Joined
- Dec 21, 2005
- Location
- Waukesha, WI
Could be this is what you are thinking of:
Kerr Disclosing Wax Ivory Color 57g Jar Dental
NOS 2 5 | eBay
No experience with it. I don't think it's soft at room temp.
Kerr Disclosing Wax Ivory Color 57g Jar Dental
NOS 2 5 | eBayNo experience with it. I don't think it's soft at room temp.
plastikdreams
Diamond
- Joined
- May 31, 2011
- Location
- upstate nj
Don't even feed him...he spouts more crap than a Mexican river
Gordon B. Clarke
Banned
- Joined
- May 29, 2010
- Location
- Denmark
Relax. Did I say who should make the form drill? BTW there is a difference between "easiest" and "easily".
plastikdreams
Diamond
- Joined
- May 31, 2011
- Location
- upstate nj
Gordon B. Clarke
Banned
- Joined
- May 29, 2010
- Location
- Denmark
You obviously have no idea what I do or make. Either that or you're just trying to provoke.
Do you need a Practitioner licence to order this though? I've looked at several different products similar to this, but all the other sites said they require a licence to order this.
Larry Dickman
Titanium
- Joined
- Jan 30, 2014
- Location
- Temecula, Ca
Not that I was aware of. One of our inspectors ordered a bunch a ways back, I don't know what he went through to get it. Fortunately, you can reuse it over and over, so one stick will last for years. Let me see if I can find out.
Larry Dickman
Titanium
- Joined
- Jan 30, 2014
- Location
- Temecula, Ca
looks like you're right. I'll have to find out how he got it. Maybe he just lied to them.
