Hello and welcome to our community! Is this your first visit?
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?
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
Originally Posted by Tel
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?
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
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?
Originally Posted by Wardy_uk
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.
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
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...