Anyone tried out black juma?
- Thread starter MVPCues
- Start date
I use it for Butt and joint , like how it works , and Pure Black . JIm
I bought some to cut black rings out of instead of ebony because I hate cutting ebony away as rings. My blade in .040" & cutting .010 & .015" rings wastes a lot more than I get. The Juma turned out to be very good except that it is tough on HSS after several cuts. I would cut a dozen rings & need to sharpen my blade. With wood I get 100 cuts. However, I can cut Juma to .005" rings where wood virtually vaporizes at that thin.
I began using it for collars & it's great. Glues well, cuts well, and is very clean black. Good stuff.
I began using it for collars & it's great. Glues well, cuts well, and is very clean black. Good stuff.
What do you use for adhesive? I usually yellow wood glue for billets but they are almost always wood, sometimes phenolic. Both of which wood glue holds well. Might have to try it on Juma.
Hi,
Most of my billets are wood and using Black & White Juma for the center of my boxed rings has been wonderful. The white does not get dirty and the black does not cross contaminate. It machines great, and when it comes off my saw at final taper dimension it is perfect in a few seconds of sanding.
I use slow cure epoxies for my billets.
Rick
Does anyone know this materials generic name? For example plexiglass is acrylic, Delrin is acetel. Is this material have an industrial use or has it been formulated specificly for the billiard industry? Just currious.
I believe it was formulated specifically for billiard cues. But if it's a common industrial plastic, i'd be interested in knowing, too.
I have not had the opportunity to work with it yet but it sounds alot like NORYL. Which is used in the electrical indusrty. It is rare that they would formulate a new plastic for such a small industry. I like all that I have heard about it but would like to know its mechanical properties as compared to phenolics.
iqcues
Registered
I use it all the time. Very easy to work with,butt dont pout for a ring ,is very hard you must sandit very well.
dimitris
Is NORYL available in black and natural? Have a link? I'm interested.
If you google it there is lots of info. I ran across a piece at work and was wondering if it was suitable for cue work. I even posted on here to see if anyone had used it before. I will have to order some from atlas and compare.
I love both white and black juma...in fact due to the quality and the way it takes finish I switched from double black phenolic to juma...eric I have found when glueing juma ring billets (metal rings) The only thing I trust is the west system....I have had bad luck with lots of other glues on thin parted rings
I took Juma to a plastics maker here to get analyzed.
The expert burnt it and tried to figure it out.
HE COULDN'T.
If it was just nylon, he would have figured it out .
He said it was hard ( even though we consider it soft ).
He said he thinks it is some type of phenolic.
In a perfect world, linen or canvas based Juma exists.
Just West System slow epoxy. I have used black juma with wood, brass, aluminum and ivory micarta from atlas and the juma works great for them all.
Noryl is not nylon. I don't know if Juma is Noryl but if you do some reading on it you would find that it has alot of favourable traits. It is a thermoset plastic that can be glass filled as well. There are not very many new plastics out there and there development is not cheap. I highly doubt that they would have put the time and resourses into developing a new material just for cue makes. It may be new to our industry but certainly not new. They just give it some obscure name. Atlas billiards is just a small part of Atlas Fiber. There are much bigger customers of plastic then the cue industry. It's like everything else in this industry we borrow alot of our material from other industries. For example the leather we use for wraps is from the shoe industry. They dont Tan leather just for us. So on that logic I believe Juma is an available plastic with industrial purposes and we simply borrow it because it works in our application. But hey if someone can show me I am on the wrong track I will be the first say I was wrong.