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Thread: Purple heart not purple??
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15th December 2009, 07:10 PM #1
Purple heart not purple??
ok quick question
i had a purple hear pen blank that looked purple cut it with the bandsaw yup purple trimed it with the disc sander no change trimmed it with my barrel trimmer what great colour then i turned it in the lathe and its turned a muddy sort of colour
i finnished turning it and im really happy with its shape this is also kinda special as i have been wanting to turn Purple heart for ages and i have been wanting to give it to my girlfriend so how do i get the rich colour back? should i just wait for it to age a bit in the sun?happy turning
Patrick
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15th December 2009 07:10 PM # ADSGoogle Adsense Advertisement
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15th December 2009, 07:42 PM #2
You should have finished it when it was purple, you'll have to sand it back to get the colour back but that'll probably make it undersize
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15th December 2009, 07:46 PM #3
no the thing was it was purple on the outside when i turned it but when i turned it down thats when it changed to a muddy colour you could see it when i was roughing it out the flat sides were purple and the turned sides were brown
happy turning
Patrick
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15th December 2009, 07:53 PM #4
If you introduce to much heat through sanding you loose the colour.
In trying to learn a little about everything,
you become masters of nothing.
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15th December 2009, 08:07 PM #5
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15th December 2009, 08:26 PM #6Pocketful of Pens
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leave it overnight unsealed and it should be purple in the morning, thats what i usually do
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15th December 2009, 08:41 PM #7
thanks ill try that
happy turning
Patrick
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15th December 2009, 08:47 PM #8
Ultra violet light will make it purple again. Heat generated from turning/sanding will make it go brown. Leave it in natural sunlight for a few minutes (10-15) and make sure you rotate it a few times. From what I understand, all purpleheart will go brown eventually though... best of luck and look forward to pics when you're done
It's only a mistake if you don't learn from it.
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15th December 2009, 10:59 PM #9Skwair2rownd
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Purpleheart, or Roxinha as it is called here in Brasil, is a very commonly used timber for all sorts of things-farm gates, building timber and furniture.
The timber turns brown when left exposed and untreated in the weather.
It seems too that older pieces may behave differently. I Tuned a piece for a friend here. It was from a shaed his father had built more than 70 years ago. The timber had been painted. When turned and sanded the colour was nothing like purple.
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15th December 2009, 11:04 PM #10
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15th December 2009, 11:54 PM #11
I've done a great deal of work with purpleheart over the years. Place it in a sunny window for a couple of days, rotating it occassionally. It will turn back to bright purple. The best finish I;ve found for locking the color in is shellac. Finished a purpleheart box with shellac more than a year ago and it's still vivid purple. Haven't found anything else to lock in the color better though.
When all is said and done, there is usually a whole lot more said than done.
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16th December 2009, 12:52 AM #12
Sunshine is the trick - here in the West a few hours hanging in the sun NO SHADOWS and it goes back to purple again!!
JD"No point getting older if you don't get smarter"
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16th December 2009, 08:54 AM #13
Purpleheart and Sapwood
I have been rummaging in my stash. The Purpleheart in amongst others varies from figured to colour and sapwood with tight curly figure.
My conclusion is the sapwood that is brown will be exciting in its own right.
Up to my ears in making machinery tick and purr but intend in the new year to turn again.
Have fun with your Purples and browns I surely will.
Richard Raffan I am fond of quoting tells me all timbers revert over time to plainish and some downright ordinary. Having said that the modern day finishes could prolong the beauty longer.
Have fun with Xmas as well.
Kind regards Peter.
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16th December 2009, 09:39 AM #14Senior Member
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I have just finished turning a dozen purpleheart pens for Christmas presents. I am so over that timber at the moment but that's because it's all I have seen.
When I finish shaping and sanding the pen, I finish it with a wipe on oil varnish blend that I have made (Danish oil and Minwax WOP) and place it on a peg board that I can sit in the sun while the finish dries. The pen goes from turdy brown to vivid purple in about 2 hours. The first pen I turned at the start of the year was brown when I finished it. I gave it to my wife who wasn't all that interested as it wasn't the nice purple the blank had been but over the next few days, the colour would turn and it is now a lovely shade of purple.
Cheers
Paul
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16th December 2009, 03:57 PM #15
thanks guys you have all put my mind at ease i left it in the lathe last night and when i checked it this morning the shavings were nice and purple and the blank was changing more purple i think ill put it in the window sill and finish it in a few days
thanks guys ill show pic's when its donehappy turning
Patrick
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