Trick to turning Purple Heart?

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yellowtruck75

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Joined
Apr 13, 2011
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16
Who turns Purple Heart? I am having a heck of a time getting it to finish purple. I have no problem turning a pen but the finish comes out more brown than purple.


Thoughts?
 
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LeeR

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Nov 13, 2010
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630
Location
Fort Collins, Colorado
It needs to sit in sunlight to turn it back to purple. I just put anything purpleheart by the window, and wait ...

Hard to say how long it may take, but a few days to a week or so is not uncommon. Sand it to finished shape and smoothness, and apply finish (friction polish, CA, polyurethane, etc.) after it returns to purple.
 
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woodgraver

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Nov 8, 2010
Messages
262
Location
Federal Way, WA
In my experience, when you freshly cut or turn purple heart you need to set it out in the sun for a couple of days. A combination of oxygen and sunlight seem to bring out the purple color. Ironically, to keep it purple you need to protect it from both oxygen and sunlight. Using a UV inhibitor like penofin oil and sealing with laquer is one technique I've used successfully. It isn't like it will change colors right away, and for pens I think our normal finishing methods are just fine.
 

barrysj

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Oct 2, 2009
Messages
125
Location
woodbridge va
You need to turn it and sand it so that it is ready for finishing. Place it in a window sill for 2-3 days (rotating it every day). Do not put it in a window sill that bakes the blank...just one where there is enough sun light. The material is photosensitive. It will color up to purple in two to three days and then you can finish it with CA or polish:)

-Steve
 

yellowtruck75

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Joined
Apr 13, 2011
Messages
16
The pen I turned already has the CA finish on it. If I place in the window now will it color up a bit?

Thanks for all the advice I will turn a few this afternoon and let them sit before finishing.
 

seamus7227

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Mar 18, 2009
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6,220
Location
Wichita Falls, TX
The pen I turned already has the CA finish on it. If I place in the window now will it color up a bit?

Thanks for all the advice I will turn a few this afternoon and let them sit before finishing.

Yeah you should be fine. Cocobolo is the same way. I usually dont worry about it and let it happen in time.
 

ren-lathe

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Joined
Feb 6, 2011
Messages
343
Location
St. Clair Shores, Michigan
As someone said coco bolo is the same way. Some of my customers like the "developing" process and want theirs fresh turned so they can see the process. Be careful on the toaster oven process to keep the heat very low, purple heart can heat check
 
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