Hybrid Blank Problem
- Thread starter RGVPens
- Start date
Signed-In Members Don't See This Ad
Signed-In Members Don't See This Ad
Painfullyslow
Member
It is hard to see but it looks like some form of delamination. If you made that blank, maybe the resin was already curing before you got to mixing them together? I am far from an expert here but that is my guess.
Or, is that wood where the blue is coming off of it? If so, I would guess that it was poor surface prep of the wood before pouring the acrylic (whomever made it).
Also, when it comes to turning blanks that are delicate, I always take it to my belt sander and round off all of the corners as much as I can before taking it to the lathe. It really helps prevent a lot of the grabbing.
Or, is that wood where the blue is coming off of it? If so, I would guess that it was poor surface prep of the wood before pouring the acrylic (whomever made it).
Also, when it comes to turning blanks that are delicate, I always take it to my belt sander and round off all of the corners as much as I can before taking it to the lathe. It really helps prevent a lot of the grabbing.
randyrls
Member
Gary; I would try to sand off the corners of the blank and roughly round the corners. Next don't scrap, shear or cut. And lastly, cut from the center toward the ends.
Some have a problem with drilling the blanks and when the drill bit breaks through the end of the blank cracks develop in the blank.
Some have a problem with drilling the blanks and when the drill bit breaks through the end of the blank cracks develop in the blank.
Last edited:
RGVPens
Member
I bought the blanks, haven't gone down the casting rabbit hole.....yet!
No problem drilling, I use my lathe for drilling.
I'll try sanding it more round to start. I'm probably going to get a band saw soon and will make a jig to cut to octagon shape to start. Doing all my blank cutting with my scroll saw now...PIA!
No problem drilling, I use my lathe for drilling.
I'll try sanding it more round to start. I'm probably going to get a band saw soon and will make a jig to cut to octagon shape to start. Doing all my blank cutting with my scroll saw now...PIA!
greenacres2
Member
Is your carbide fresh/sharp?
Earl
Earl
RGVPens
Member
Yup, that was the first thing I thought of and tried...OK, baybe the second. But I did rotate it to a fresh spot. I really like the carbide tools.
RGVPens
Member
McKenzie Penworks
Member
No... done correctly they should be very easy to turn. If folks skipped proper stabilizing of the wood, etc you'll get ones that are a bit more finicky. Also, you get a better product by warming the mold/wood prior to pouring and most folks skip that step as well.
Alan Huey
Member
In my experience using a (very sharp) skew chisel will solve most of the chip out issues. Work from the center toward the ends in both directions.
Alan Huey
Member
Looks great!
Glad to know I'm doing correctly, all mine are stabilized and I always warm my mold.
McKenzie Penworks
Member
Little bit of effort resulting in MUCH better productsGlad to know I'm doing correctly, all mine are stabilized and I always warm my mold.
That museum wax does just fine in the oven at 125-135 degrees FYI. I stick the wood down to HDPE molds with it and warm them prior to pouring. Have not had a single one lift on me in hundreds of casts. (I don't think I've hit thousands with the hybrids... rarely have time to do them lol)