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| Purfling wrinkles in waist http://www-.luthiersforum.com/forum/viewtopic.php?f=10102&t=5750 |
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| Author: | Pete Harrington [ Mon Mar 20, 2006 12:17 pm ] |
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Well, I am in the process of binding number one with IR and I bent the purflings that sit between the binding and sides at the same time (all pieces taped together). Upon completion, the waist area of the purfling wrinkled. I tried using my wife's iron (unbeknownst to her  ) but I can't seem to get it smooth.
Any tips? Pete |
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| Author: | A Peebels [ Mon Mar 20, 2006 12:40 pm ] |
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Pete What kind of perfling? Herringbone- BWB? How wide? Al |
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| Author: | John Mayes [ Mon Mar 20, 2006 12:51 pm ] |
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the only time I see this happen is if the purfling is too tall or if too much pressure is used when clamping down the waist... |
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| Author: | Pete Harrington [ Mon Mar 20, 2006 2:14 pm ] |
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Hi Al, John Well, purfling may not be the correct term. It is actually a B/W strip, .020" thick and about .100" wide that basically "sits" underneath the narrow part of the binding, between the binding and side. Some vendors sell the wood binding with this piece already glued on (why I didn't buy that - I don't know  )
In any event, I taped all 4 pieces of IR binding edge to edge with the B/W strips in between and bent it all together on the bending iron. The B/W strip wrinkled a bit in the narrow part of the waist (outside edge). I'll try and iron some more (God I hate ironing!) maybe with a little steam this time. |
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| Author: | A Peebels [ Mon Mar 20, 2006 2:23 pm ] |
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It sounds like you were trying to bend a peice that was too wide.When I use purfling on the sides,, I glue it to the binding, then use my thickness sander to make it the same thickness as the binding. Al |
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| Author: | John Mayes [ Mon Mar 20, 2006 2:40 pm ] |
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[QUOTE=A Peebels] It sounds like you were trying to bend a peice that was too wide.When I use purfling on the sides,, I glue it to the binding, then use my thickness sander to make it the same thickness as the binding. Al[/QUOTE] Exactly what I was saying. And yes purfling is the correct word. Still both things I mentioned hold true. too tall of a purfling (or wide depending on how you look at it) or too much pressure will wrinkle them. |
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| Author: | Pete Harrington [ Mon Mar 20, 2006 2:43 pm ] |
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Al, Great idea, thanks! Thinking about it in hindsight, your method would provide the support necessary to help affect a flat bend. In addition, making the B/W purfling thinner width-wise, would tend to reduce the wrinkling effect as well, I would think. Wow, lots of excuses to try out new/better/efficient methods on another geetar!!! Thank you for the insight,  !
Pete |
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| Author: | Pete Harrington [ Mon Mar 20, 2006 2:50 pm ] |
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John, I was typing while you were replying . I really mean it guys, thanks for the tips.
By the way John, I bought your DVD set and love it! Unfortunately, I was already into a quagmire of mistakes and recoveries before I ordered it - I'll have to apply your teachings on the next guitar and chalk this one up to experience. Seems like one step forward, two steps back most of the time. It's a bit like golf, the Mulligan ALWAYS lands in the fairway (at least half the time  ) Thanks for your help.
Pete |
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| Author: | Todd Rose [ Mon Mar 20, 2006 10:15 pm ] |
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For sure glue that purfling to the binding first. That's the way it's done. |
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| Author: | Arnt Rian [ Mon Mar 20, 2006 10:42 pm ] |
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Todd, that's how I do it too, but I believe some people like to glue everything up on the guitar because it is easier to mitre the purflings if they are not glued to the bindings already. |
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| Author: | Michael Dale Payne [ Tue Mar 21, 2006 1:11 am ] |
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I under-bend binding and purfling, meaning I never bottom out the cauls on the bender when bending binding and purfling. I bend just barley short of closing the cauls. Binding and purfling has enough flex that if you get the bend close it will pull-in . Fiber purfling have a tendency to wrinkle, crimp and delaminate if clamped to firm in the bender. Wood crimps and cracks So I choose to under bend. |
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| Author: | Todd Rose [ Tue Mar 21, 2006 5:36 am ] |
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[QUOTE=Arnt] Todd, that's how I do it too, but I believe some people like to glue everything up on the guitar because it is easier to mitre the purflings if they are not glued to the bindings already.[/QUOTE] Thanks, Arnt. Just to clarify what I said: I didn't mean to say this (gluing the purfling to the binding first) is the ONLY way it's done. My comment was sort of a "from one novice to another" kind of thing - this is the way it's done until you want to get into more complex techniques, then anything is possible. |
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| Author: | John Mayes [ Tue Mar 21, 2006 6:13 am ] |
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I do my purfling and binding separately. As long as you make the side purfling the thickness of the binding first (I run mine through my drum sander to get to .065 like my binding), and then tape tightly and bend it with not too much pressure i the waist you won't get any wrinkles. |
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