Darryl Keil Last Activity 2026-04-25 12:44 PM
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mike ray

 
Subject : mappa burl on drums
Posted : 2003-03-18 8:48 PM
Post #28768
I have been planning on veneering some drums with mappa burl. I just found this site, and there are some drum, and mappa topics. However they are old and I can't pull them up. After reading this forum, what I thought would be simple, I am now thinking is impossible. I had planned on using contact cement, I may now use unibond 800, but getting confused. Contact cement from what I have read is flexible which is what I need for very thin drum shells. Unibond might work good with the mappa burl, for filling in all the holes. Anyone have any ideas for a beginner venerror. Great site with alot of info here!!!!!!!! May need a search, it is hard to find previous topics.



 
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Tom Wilkinson

 
Subject : mappa burl on drums
Posted : 2003-03-19 8:59 PM
Post #28772 - In reply to #28768
: I have been planning on veneering some drums with mappa burl. I just : found this site, and there are some drum, and mappa topics. However : they are old and I can't pull them up. After reading this forum, what : I thought would be simple, I am now thinking is impossible.: I had planned on using contact cement, I may now use unibond 800, : but getting confused. Contact cement from what I have read is : flexible which is what I need for very thin drum shells. Unibond : might work good with the mappa burl, for filling in all the holes. : Anyone have any ideas for a beginner venerror. Great site with alot : of info here!!!!!!!! May need a search, it is hard to find previous : topics.I have veneered a couple of drums. It is not difficult but it is not easy eaither. Iused unibond 800 and a vacuum press. You need to use a bag that is large enough to fold completely inside the drum gainst the inside and outside surfaces or you risk crushing the shell. You could also use a bladder system to take up the space inside the shell. I would recommend flattening the veneer prior to application. You could do a dry run with no glue to see if everything will work.Tom




 
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mike ray

 
Subject : mappa burl on drums
Posted : 2003-03-19 10:13 PM
Post #28775 - In reply to #28772
: : I have been planning on veneering some drums with mappa burl. I just : : found this site, and there are some drum, and mappa topics. However : : they are old and I can't pull them up. After reading this forum, what : : I thought would be simple, I am now thinking is impossible.: : I had planned on using contact cement, I may now use unibond 800, : : but getting confused. Contact cement from what I have read is : : flexible which is what I need for very thin drum shells. Unibond : : might work good with the mappa burl, for filling in all the holes. : : Anyone have any ideas for a beginner venerror. Great site with alot : : of info here!!!!!!!! May need a search, it is hard to find previous : : topics.: I have veneered a couple of drums. It is not difficult but it is not easy eaither. Iused unibond 800 and a vacuum press. You need to use a bag that is large enough to fold completely inside the drum gainst the inside and outside surfaces or you risk crushing the shell. You could also use a bladder system to take up the space inside the shell. I would recommend flattening the veneer prior to application. You could do a dry run with no glue to see if everything will work.: TomWhere can you find a bag large enough and flexable to do this. I went by my local woodcraft store without any luck? Thanks for your info.




 
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Tom Wilkinson

 
Subject : mappa burl on drums
Posted : 2003-03-20 8:04 AM
Post #28778 - In reply to #28775
: : : I have been planning on veneering some drums with mappa burl. I just : : : found this site, and there are some drum, and mappa topics. However : : : they are old and I can't pull them up. After reading this forum, what : : : I thought would be simple, I am now thinking is impossible.: : : I had planned on using contact cement, I may now use unibond 800, : : : but getting confused. Contact cement from what I have read is : : : flexible which is what I need for very thin drum shells. Unibond : : : might work good with the mappa burl, for filling in all the holes. : : : Anyone have any ideas for a beginner venerror. Great site with alot : : : of info here!!!!!!!! May need a search, it is hard to find previous : : : topics.: : I have veneered a couple of drums. It is not difficult but it is not easy eaither. Iused unibond 800 and a vacuum press. You need to use a bag that is large enough to fold completely inside the drum gainst the inside and outside surfaces or you risk crushing the shell. You could also use a bladder system to take up the space inside the shell. I would recommend flattening the veneer prior to application. You could do a dry run with no glue to see if everything will work.: : Tom: Where can you find a bag large enough and flexable to do this. I went by my local woodcraft store without any luck? Thanks for your info. I have only done snare drums and I used a 30x60 bag and it worked fine. If I were doing a large drum like a bass or floor tom I would look at getting a bladder system. I beleive they sell both standard and custom sized bags as well as bladder systems at this site.




 
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Thomas Stender

 
Subject : mappa burl on drums
Posted : 2003-03-18 10:16 PM
Post #28769 - In reply to #28768
Mike,I think I can help you, but I need more information. What is the substrate you're gluing the veneer to? How thin is it? Why would flexibility be important in this application? Are the drums cylindrical?




 
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mike ray

 
Subject : mappa burl on drums
Posted : 2003-03-18 11:17 PM
Post #28770 - In reply to #28769
: Mike,: I think I can help you, but I need more information. What is the substrate you're gluing the veneer to? How thin is it? Why would flexibility be important in this application? Are the drums cylindrical?The musical drums are 5 ply maple less than 3/16", I think I might have a problem with the veneer cracking. My initial plan was to use contact cement, and a vacuum bag. As a mechanic I already have a vacuum pump and gauges, I am currently researching bags. I am trying to cover all of my bases as the price of mappa burl is no laughing matter. The veneer I am pricing is non backed raw veneer. I have glued laminates before, but never any veneer. I am wondering if I need to flatten the veneer before applying. I have made solid stave wood drums before, via like a barrel or wood planter. I am beginning to think I am in over my head on the possiblities of expensive failure on this project.




 
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Thomas Stender

 
Subject : mappa burl on drums
Posted : 2003-03-19 4:21 PM
Post #28771 - In reply to #28770
Read the threads about softening, conditioning, and flattening veneer.Your major problem with using a vacuum press in this application will be preventing the drum from being destroyed by the vacuum pressure. You would have to push the closed end of the bag back through the inside of the drum so that the pressure would be applied through the thickness of the sides rather than on the cylinder as a whole. I hope that's clear. I've tried using a sonotube, tightly filled with solid foam, as a form and had the vacuum crush and crinkle the tube. The layup came out pretty fair, but only because it was three layers of 1/8" bendply.To veneer the drum, you would glue the veneer around the cylinder leaving a gap of an inch or less, because you can't expect to get a reasonable joint where the free edges meet. Then clean up the excess glue and the veneer edges, and fit a strip of veneer to fill the gap. Finally, glue that down, using either the vacuum again or cawls if the cylinder is not too long.Good luck.




 
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mike ray

 
Subject : mappa burl on drums
Posted : 2003-03-19 10:07 PM
Post #28774 - In reply to #28771
: Read the threads about softening, conditioning, and flattening veneer.: Your major problem with using a vacuum press in this application will be preventing the drum from being destroyed by the vacuum pressure. You would have to push the closed end of the bag back through the inside of the drum so that the pressure would be applied through the thickness of the sides rather than on the cylinder as a whole. I hope that's clear. I've tried using a sonotube, tightly filled with solid foam, as a form and had the vacuum crush and crinkle the tube. The layup came out pretty fair, but only because it was three layers of 1/8" bendply.: To veneer the drum, you would glue the veneer around the cylinder leaving a gap of an inch or less, because you can't expect to get a reasonable joint where the free edges meet. Then clean up the excess glue and the veneer edges, and fit a strip of veneer to fill the gap. Finally, glue that down, using either the vacuum again or cawls if the cylinder is not too long.: Good luck.Yes I understand, thanks for pointing that out.




 
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Tom Wilkinson

 
Subject : mappa burl on drums
Posted : 2003-03-20 8:09 AM
Post #28779 - In reply to #28774
: : Read the threads about softening, conditioning, and flattening veneer.: : Your major problem with using a vacuum press in this application will be preventing the drum from being destroyed by the vacuum pressure. You would have to push the closed end of the bag back through the inside of the drum so that the pressure would be applied through the thickness of the sides rather than on the cylinder as a whole. I hope that's clear. I've tried using a sonotube, tightly filled with solid foam, as a form and had the vacuum crush and crinkle the tube. The layup came out pretty fair, but only because it was three layers of 1/8" bendply.: : To veneer the drum, you would glue the veneer around the cylinder leaving a gap of an inch or less, because you can't expect to get a reasonable joint where the free edges meet. Then clean up the excess glue and the veneer edges, and fit a strip of veneer to fill the gap. Finally, glue that down, using either the vacuum again or cawls if the cylinder is not too long.: : Good luck.: Yes I understand, thanks for pointing that out.If you wrap the veneer around the drum dry (no glue) and tape it where the ends overlap and then cut through both layers with a veneer saw you will get a near perfect joint. Worked perfectly on the drums I have done.




 
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david B

 
Subject : mappa burl on drums
Posted : 2003-03-20 12:18 AM
Post #28776 - In reply to #28774
Practice with some cheap veneer without glue until you are comfortable with the entire process, then go for it!
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