Page 2 of 2 FirstFirst 12
Results 16 to 22 of 22

Thread: Latest on Glues

  1. #16
    Join Date
    Jun 2018
    Location
    Brisbane
    Posts
    280

    Default

    Quote Originally Posted by poundy View Post
    glue creep = glue becoming more visible and seeping from the joint, typically over long periods eg years, because the glue retains some plasticity.
    Excellent. Many thanks mate. Now all clear.

  2. # ADS
    Google Adsense Advertisement
    Join Date
    Always
    Location
    Advertising world
    Posts
    Many





     
  3. #17
    Join Date
    Dec 2007
    Location
    Sydney
    Posts
    2,205

    Default

    I still have some of Nightingale’s UF glue.
    I used it on tables and blocking up MDF for large turnings.
    A mate swears by it for veneer pictures on MDF backing, says it doesn’t bleed thru like most other glues.
    I like epoxy for chairs as it stands up to racking well Titebond is ok also.
    I have experienced glue creep on stacked MDF turned product models when painted with acrylic.
    The two packs would probably be ok nowadays but UF guarantees the joint lines won’t show thru.
    I thought Cascamite was a curd based casein glue, they used it on the Mosquitos built here but it didn’t like the humidity and the planes fell apart in flight. They switched to UF.
    George used it on a Huon Pine bowl he constructed when he first arrived in Canberra.
    It fell apart so he dowelled it together with brass rod leaving 1/4” gaps between each stave. Very arty.
    After that it was that yellow pva and epoxy.
    H.
    Jimcracks for the rich and/or wealthy. (aka GKB '88)

  4. #18
    Join Date
    Nov 2015
    Location
    Whangarei, New Zealand
    Age
    70
    Posts
    282

    Default

    I followed RossM's links. They sell a one-shot Aerolite, but they also still sell something called Aerolite 306 in the UK. About 20 quid for 375 gram;
    that one's powder plus hardener. Whoa, Nelly. But ...
    I will keep it in mind, if I have a special application.
    The one-shot sets in 6 hours. Glue for patient people ;-) But, if it's any good?!?

    A lot of people in reviews are complaining about the Cascamite not being as good as it used to be. "They changed the formulation", is often heard.

    Related subject - here in NZ we have something called "Gorilla Grip". Don't confuse it with "Gorilla Glue". Everything I tried to do with Gorilla Glue has flown
    apart. Unlike that, Gorilla Grip, which is sold in cartridges for your gunk gun, is clear(ish) and not red, hasn't let me down yet. Tends to foam a bit on contact
    with wet wood though, which has me thinking that they must be related. PU rather than UF? Creep with the Gorilla Grip takes on a completely new meaning:
    it's a complete bastard to clamp because everything just slithers about like a barrel full of eels. Some form of pinning things in place is definitely recommended.

    Axminster also sells something called Cascamite WBP - which seems to fit the bill for Aerolite 308. Good for permanent submersion in water at any temperature,
    they say. I might get me some of that.

    Apparently you can now also buy CA glue with an accelerator spray. Sounds interesting. Pricey, once again. (found it on timberlywoodturning.co.nz)

  5. #19
    Join Date
    Apr 2007
    Location
    Sydney
    Posts
    749

    Default

    Quote Originally Posted by P.W.H. View Post
    I followed RossM's links. They sell a one-shot Aerolite, but they also still sell something called Aerolite 306 in the UK. About 20 quid for 375 gram;
    that one's powder plus hardener. Whoa, Nelly. But ...
    I will keep it in mind, if I have a special application.
    The one-shot sets in 6 hours. Glue for patient people ;-) But, if it's any good?!?

    A lot of people in reviews are complaining about the Cascamite not being as good as it used to be. "They changed the formulation", is often heard.

    ...

    Axminster also sells something called Cascamite WBP - which seems to fit the bill for Aerolite 308. Good for permanent submersion in water at any temperature,
    they say. I might get me some of that.
    OK - A bit more digging - Aerolite 306 is a UF (Urea Formaldehyde) adhesive while Aerolite 308 is an MUF (Melamine Urea Formaldehyde) glue.

    The "hardener" is basically Formic Acid, but other manufacturers use different acids or salts as a catalytic hardener.

    UF is the glue predominantly used in particle board & MDF manufacture. MUF is the glue used in the moisture resist boards & gives them that green tinge.

    Other adhesives such as phenolics are used for certain sheet goods - this varies by the sheet manufacturer & product.

    Phenolic resins are the strongest bond and are also waterproof. The polymer is thermosetting and has to be cured at elevated temperatures. The result is a permanent bond that can be exposed to heat, cold or wet conditions for a long time without deteriorating. This glue bond is used for the manufacture of structural plywood or film faced plywood. It is weather and boil proof (WBP) because phenolic resins have no melting point but only a decomposing point in the temperature zone of 220 °C.

    Melamine-urea formaldehyde glue bond is waterproof but will deteriorate after several years of being exposed continuously to weather. Its curing process may be performed both at room temperature and higher temperature depending on the application and performance requirements. Generally, melamine adhesives give very good water resistance and light coloured glue line. The Melamine adds to the cost of the resin.

    Urea-formaldehyde adhesives can only withstand occasional exposure to dampness, should not be used for structural applications or wet areas and are chosen for their fast curing and wide operating window. Desirable UF properties include hardness of the resin, low flammability, good thermal properties, absence of colour in the cured glueline and adaptability to a variety of curing conditions.

    A very interesting paper here, with more than you probably ever wanted to know!
    https://purehost.bath.ac.uk/ws/porta...ker_thesis.pdf

  6. #20
    Join Date
    Apr 2007
    Location
    Sydney
    Posts
    749

    Default

    Quote Originally Posted by clear out View Post
    ... I thought Cascamite was a curd based casein glue, they used it on the Mosquitos built here but it didn’t like the humidity and the planes fell apart in flight...
    No - “Cascamite” is a brand name used for a powder urea formaldehyde resin adhesive, and it became synonomous with any adhesive which met this specification, i.e. a one component powder urea formaldehyde resin. In recent times, they have become more commonly known as a “One Shot” adhesive. These adhesives are commonly used in veneering, laminating and joint bonding. By adding water to the stated mix ratio, an excellent adhesive is created which bonds wood exceptionally well. In comparison to PVA adhesives, these One Shot adhesives are tough, have excellent water resistance, and do not creep.

    As above, UF is not "waterproof" so the referecne to use in WW2 plane manufacture may be correct.

  7. #21
    Join Date
    Apr 2007
    Location
    Sydney
    Posts
    749

    Default what happened to Aerolite?

    1929 Dr Norman de Bruyne working on synthetic resins.


    1931 Cambridge Aircraft company set up (later named Aero Research Ltd).


    1938 Air Ministry approved the use of resins in military aircraft (Blenheim bomber, Spitfire).


    1947 Working relationship with CIBA, leading to the company becoming part of CIBA-Geigy in 1970. Resins used in the Royal Coronation coach, ‘Comet’ (first jetliner) and ‘Bluebird’ (land speed record).

    1989 Resins division sold to Dyno Industrier. Aerolite company renamed Dynochem UK Ltd. - a subsidiary of Dyno Industrier AS, Norway. Dyno Industrier group was formed in 1971 by the merger of the Norwegian Explosives Industry (a Norwegian company tracing its roots to the Alfred Nobel explosives group from 1865) and the Norwegian Mines Explosives factories. Dyno eventually became one of the world's largest civilian explosive producers. The company also ran a chemical business (especially glue production ) and plastic production. At the end of the 1990s, Dyno had a turnover of approximately NOK 12 billion with activities in around 40 countries and with almost 9,000 employees.


    1995 Dynochem moved production of urea formaldehyde resins to the Synthite Ltd site in Mold, North Wales. Dynochem also built a resins plant and formaldehyde plant in Cork, Eire.


    1996 Construction of a phenol formaldehyde plant. Resins used as part of the rebuilding of York Minster after a major fire (laminating oak beams).


    2000 Norsk Hydro was for a long time Dyno's largest owner, but in 2000 the group was taken over and divided by the Swedish investment company Industri Kapital (a Scandinavian venture capital group) and merged with Neste Chemicals to form Dynea. Dyno Nobel was established to continue the explosives business, while the chemical business was integrated with Dynea. The Aerolite manufacturing site was renamed Dynea UK Ltd Mold.


    2013 Dynea Mold purchased by the Tennants group and becomes part of the Synthite group within Tennants. Company renamed TS Resins Ltd. Dynea Cork becomes part of the Tennants group. Company renamed Marinochem Ltd.

    Current owners of Aerolite:

    TS Resins
    Alyn Works
    Denbigh Road
    Mold
    Flintshire
    North Wales

    CH7 1BF
    +44 1352 757 657
    +44 1352 758 914
    [email protected]
    Urea Formaldehyde, Melamine & Amino Resins | TS Resins

    Also, Alansons UK are retailers:
    Urea - Alansons

  8. #22
    Join Date
    Apr 2007
    Location
    Sydney
    Posts
    749

    Default

    Quote Originally Posted by P.W.H. View Post
    A lot of people in reviews are complaining about the Cascamite not being as good as it used to be. "They changed the formulation", is often heard.
    Quite possible - with OH&S and growing environmental & general health concerns, there has been a lot of work to reduce the off-gassing of formaldehydes (potential carcinogens) from manufactured products. I read a few abstracts of papers looking into resin formulations that have formaldehyde "scavengers" added to reduce this risk. These might cause reduced adhesive performance, but I did not see any explicit testing of impacts on glue strength in the abstracts.

Page 2 of 2 FirstFirst 12

Similar Threads

  1. Glues
    By Benny_ in forum WOODTURNING - GENERAL
    Replies: 12
    Last Post: 14th June 2018, 10:34 PM
  2. So there are other glues...
    By Onezero in forum GLUE
    Replies: 12
    Last Post: 23rd January 2012, 10:41 PM
  3. Glues
    By JTTHECLOCKMAN in forum WOODTURNING - PEN TURNING
    Replies: 9
    Last Post: 17th January 2012, 10:39 PM
  4. Glues etc
    By John Saxton in forum WOODWORK - GENERAL
    Replies: 18
    Last Post: 22nd August 2011, 06:05 PM
  5. New Age Glues
    By echnidna in forum WOODWORK - GENERAL
    Replies: 1
    Last Post: 1st January 2009, 10:49 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •