Hello and welcome to our community! Is this your first visit?
Register
Page 1 of 2 12 LastLast
Results 1 to 10 of 16
  1. #1
    Established TDF Member Wardy_uk's Avatar
    Join Date
    Jan 2016
    Location
    NW Leicestershire
    Posts
    757
    Likes (Given)
    641
    Likes (Received)
    127

    How much two-part adhesive?

    I'm going to attempt to add a new pocket to my neoprene drysuit...

    How much adhesive am I likely to need?

    Obvs, it will depend on the size of the pocket - is there a rule for thumb as to how much adhesive per cm2?

    TIA

    Nick

  2. #2
    Established TDF Member Tel's Avatar
    Join Date
    Dec 2012
    Posts
    3,584
    Likes (Given)
    253
    Likes (Received)
    1160
    Get a 240ml can and mark on the side half, then quarters.
    Hold the part B Bottle upto the light and add a bit of masking tape with the top edge at the half-way mark.

    Get a jam jar (Bon Mama are best as they don't have a lip) and pour a quarter fron one and can visually
    gauge a quarter from the other.

    On average and retail this is 3 worth of glue, so this quarter should be enough however, neoprene needs a
    thin layer of glue first to soak in, followed by a second about 10+ minutes later, so you'll need enough for 2 coats
    on both pocket and suit assuming pocket is also neo.

    So the awnser is IMO you mix up a quarter and do the first coat. If you use half on that (eight of a can) you know
    you are ok. If you've used over you know you are going to need more, so better to ditch what you've made and do fresh

    I suspect you'll do the lot with a quarter of a can

  3. #3
    Established TDF Member Wardy_uk's Avatar
    Join Date
    Jan 2016
    Location
    NW Leicestershire
    Posts
    757
    Likes (Given)
    641
    Likes (Received)
    127
    Quote Originally Posted by Tel View Post
    Get a 240ml can and mark on the side half, then quarters.
    Hold the part B Bottle upto the light and add a bit of masking tape with the top edge at the half-way mark.

    Get a jam jar (Bon Mama are best as they don't have a lip) and pour a quarter fron one and can visually
    gauge a quarter from the other.

    On average and retail this is 3 worth of glue, so this quarter should be enough however, neoprene needs a
    thin layer of glue first to soak in, followed by a second about 10+ minutes later, so you'll need enough for 2 coats
    on both pocket and suit assuming pocket is also neo.

    So the awnser is IMO you mix up a quarter and do the first coat. If you use half on that (eight of a can) you know
    you are ok. If you've used over you know you are going to need more, so better to ditch what you've made and do fresh

    I suspect you'll do the lot with a quarter of a can
    Might invest in a bigger can then... I’ve got a 125ml can already... might be enough, but might not be

  4. #4
    Established TDF Member Tel's Avatar
    Join Date
    Dec 2012
    Posts
    3,584
    Likes (Given)
    253
    Likes (Received)
    1160
    Quote Originally Posted by Wardy_uk View Post
    Might invest in a bigger can then... I’ve got a 125ml can already... might be enough, but might not be
    Do the same and it's easier split it in half mix the half in a jam jar and if not enough mix the 2nd lot in the original can

    125ml should do it easy, but suspect you'll need half that

    One other thing to note with glue is the date.
    If doing a job and the glue is out the next month etc, better to just use the lot anyway and chuck what's left over.

  5. #5
    Established TDF Member Wardy_uk's Avatar
    Join Date
    Jan 2016
    Location
    NW Leicestershire
    Posts
    757
    Likes (Given)
    641
    Likes (Received)
    127
    OK - so have the two-part adhesive, and the pocket.. all ready to go...

    only now I'm doubting myself! lol

    Best practice for getting thie right first time?

    So far, I've

    - Thoroughly cleaned the neoprene
    - Masked the area with tape

    now I plan to;

    - Apply a coat of the adhesive to pocket and suit over the whole area
    - Wait 10 mins for it to dry
    - Apply a second coat

    But for this second coat - do I apply over the whole area again? I've seen conflicting advice with some saying over the whole area, and some saying just the edges and stripes so approx 50% of the area is covered?

    tia

    Nick

  6. #6
    Established TDF Member Tel's Avatar
    Join Date
    Dec 2012
    Posts
    3,584
    Likes (Given)
    253
    Likes (Received)
    1160
    By clean, have you used MEK?

    Put some masking tape on the top and botton of the pocket and mark two vertical iines top and bottom showing the center
    of the pocket. Do the same on the suit showing the corresponding position.

    Apply first coat to both, then as you say wait 10 mins then do a second coat to both.

    Make sure the suit is as flat as you can make it and curve the loose pocket towards you along the centerline, position using the masking
    tape lines top and bottom to make the first contact. Slowly smooth flat from the center to the outside edge at first with hand
    and then once all in place with roller. Give it a dusting with talc and stick a towel or cloth over the lot before adding a lump of
    wood and some weights then leave alone for a day, better 2 days.

    The only issue with neoprene is you can get a slight bleed under the tape and some leave it a bit short so it looks neat, but
    i've found this is where it starts to peel, so better to go to the edge to be sure and if it does bleed, so what

  7. #7
    Established TDF Member Wardy_uk's Avatar
    Join Date
    Jan 2016
    Location
    NW Leicestershire
    Posts
    757
    Likes (Given)
    641
    Likes (Received)
    127
    no - cleaned with soap and water

    the supplier of the pocket advised not to use anything else to clean it... I was going to use toluene or alcohol to do it, but they said not to...

    so its a full second coat over the whole area then?

  8. #8
    Established TDF Member Tel's Avatar
    Join Date
    Dec 2012
    Posts
    3,584
    Likes (Given)
    253
    Likes (Received)
    1160
    Quote Originally Posted by Wardy_uk View Post
    no - cleaned with soap and water

    the supplier of the pocket advised not to use anything else to clean it... I was going to use toluene or alcohol to do it, but they said not to...

    so its a full second coat over the whole area then?
    Yep

    As long as you are careful and work from the center making sure it's got no voids as you do it, it's fine.

  9. #9
    Established TDF Member MikeF's Avatar
    Join Date
    Dec 2012
    Location
    Darkest Aberdeenshire
    Posts
    3,909
    Likes (Given)
    208
    Likes (Received)
    2830
    My advice would be don't draw around the pocket and cover the whole surface you only need a 1" strip around the edge as this allows the neoprene to stretch better and not be as restrictive when moving in the suit.

    I've fitted loads of pockets using the steps below and never had one come loose

    - put the suit on, position the pocket and draw around it
    - remove the suit and draw another line about 1' inside the outer line
    - clean this area with toluene
    - clean a 1" strip around the pocket edge with toluene
    - paint both surfaces inside the 1" strip with 2402 glue and let it go touch dry (don't worry if you get a bit outside the strip, better doing too big an area than too small)
    - paint both surfaces again and let it go touch dry
    - paint both surfaces again until touch tacky
    - apply the pocket and press down firmly all around the edge
    - get a rag and soak it in toluene and rub around the edge of the pocket to remove any visible glue from the suit and pocket, which makes it look professional and not a dogs breakfast.
    - leave it for 24 hours to fully cure

  10. #10
    Established TDF Member Wardy_uk's Avatar
    Join Date
    Jan 2016
    Location
    NW Leicestershire
    Posts
    757
    Likes (Given)
    641
    Likes (Received)
    127
    thanks for the advice both...

    I'd also heard that not covering the whole surface on the second coat was better... advice seems to vary between just the edges, a couple of stripes, or some kind of cross pattern

    I also think I'll have to get some toluene as well...


 
Page 1 of 2 12 LastLast

Posting Permissions

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