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de-bonding PVA?


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7 replies to this topic

#1
hamilton

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Hi all:

 

Wondering if anyone knows a way of de-bonding PVA that does minimal damage to the parts. I'm trying to separate pieces of 3/16" birch ply along their edges. Thanks!

hamilton


current builds: MS Brig Syren; Bluenose fishing schooner (1921) (scratch)
 
previous builds: MS Phantom; MS Sultana (1767); Corel Brittany Sloop; MS Kate Cory; MS Armed Virginia Sloop; Corel Flattie; Mamoli Gretel; Amati Bluenose (1921); AL San Francisco; Corel Toulonnaise (1823); 
MS Glad Tidings (1937)HMS Blandford (1719) from Corel HMS GreyhoundFair Rosamund (1832) from OcCre Dos Amigos; Amati Hannah (ship in a bottle); Mamoli America (1851)
 
under the bench: Corel HMS Bellona (1780); Admiralty Echo cross-section; MS Emma C Barry; MS USS Constitution; MS Flying Fish; Corel Berlin


#2
GuntherMT

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If it's normal PVA (i.e. not water resistant/proof) than water should de-bond it.  Alcohol should also work.  It does take a while as the water needs to soak into the joint and the wood surrounding the joint to soften the PVA.


  • mtaylor, WackoWolf, hamilton and 2 others like this

#3
hamilton

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Noted this in your post on my BN log, but wouldn't extensive soaking of wood parts in water pose a problem of distortion in the wood? 

hamilton


  • mtaylor, davyboy, Canute and 1 other like this

current builds: MS Brig Syren; Bluenose fishing schooner (1921) (scratch)
 
previous builds: MS Phantom; MS Sultana (1767); Corel Brittany Sloop; MS Kate Cory; MS Armed Virginia Sloop; Corel Flattie; Mamoli Gretel; Amati Bluenose (1921); AL San Francisco; Corel Toulonnaise (1823); 
MS Glad Tidings (1937)HMS Blandford (1719) from Corel HMS GreyhoundFair Rosamund (1832) from OcCre Dos Amigos; Amati Hannah (ship in a bottle); Mamoli America (1851)
 
under the bench: Corel HMS Bellona (1780); Admiralty Echo cross-section; MS Emma C Barry; MS USS Constitution; MS Flying Fish; Corel Berlin


#4
SpyGlass

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Steam it with a kettle or something - it comes apart in seconds


  • mtaylor, hamilton, donfarr and 1 other like this

#5
hamilton

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Thanks SpyGlass!


  • mtaylor and Canute like this

current builds: MS Brig Syren; Bluenose fishing schooner (1921) (scratch)
 
previous builds: MS Phantom; MS Sultana (1767); Corel Brittany Sloop; MS Kate Cory; MS Armed Virginia Sloop; Corel Flattie; Mamoli Gretel; Amati Bluenose (1921); AL San Francisco; Corel Toulonnaise (1823); 
MS Glad Tidings (1937)HMS Blandford (1719) from Corel HMS GreyhoundFair Rosamund (1832) from OcCre Dos Amigos; Amati Hannah (ship in a bottle); Mamoli America (1851)
 
under the bench: Corel HMS Bellona (1780); Admiralty Echo cross-section; MS Emma C Barry; MS USS Constitution; MS Flying Fish; Corel Berlin


#6
Jaxboat

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Highest Proof Iso propanol (rubbing alcohol) you can find. Dissolves typical PVA and does not swell wood or raise grain


  • mtaylor, davyboy, hamilton and 4 others like this

#7
hamilton

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Thanks Jaxboat!

hamilton


  • mtaylor, donfarr, Jaxboat and 1 other like this

current builds: MS Brig Syren; Bluenose fishing schooner (1921) (scratch)
 
previous builds: MS Phantom; MS Sultana (1767); Corel Brittany Sloop; MS Kate Cory; MS Armed Virginia Sloop; Corel Flattie; Mamoli Gretel; Amati Bluenose (1921); AL San Francisco; Corel Toulonnaise (1823); 
MS Glad Tidings (1937)HMS Blandford (1719) from Corel HMS GreyhoundFair Rosamund (1832) from OcCre Dos Amigos; Amati Hannah (ship in a bottle); Mamoli America (1851)
 
under the bench: Corel HMS Bellona (1780); Admiralty Echo cross-section; MS Emma C Barry; MS USS Constitution; MS Flying Fish; Corel Berlin


#8
mischief

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Use " EVER CLEAR " and a hypo plunger & flush needle.


  • Canute likes this




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