I use Sis404, 5200, sikaflex 61a etc and blue tape off the hardware or
window surrounds and so on applying a moderate layer of ikumpucky with
maybe a 1/8 inch border and wiping off the excess. When I peel the
tape there is never a good line like with paint, it's always ragged or
smeared. I've tried different wait times but it's never much
different. Is there a technique you salty professionals use? Thank
you.

all thumbs wrote:
I use Sis404, 5200, sikaflex 61a etc and blue tape off the hardware or
window surrounds and so on applying a moderate layer of ikumpucky with
maybe a 1/8 inch border and wiping off the excess. When I peel the
tape there is never a good line like with paint, it's always ragged or
smeared. I've tried different wait times but it's never much
different. Is there a technique you salty professionals use? Thank
you.

Put down 3 layers of tape. Apply goop. Clean up. Remove top layer of
tape. Repeat twice.
If you find this still produces icky-looking edges, then refine your
technique

I may be cheating but I lay some light grip tape (blue tape) over a heavy
grip tape. (ductape will work if you can't find anything else) Then remove
the top tape after the caulk has skinned over but the inside is still
slightly fluid. Surface tension pulls the roughness into a smooth bead.

--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

"all thumbs" wrote in message
...
I use Sis404, 5200, sikaflex 61a etc and blue tape off the hardware or
window surrounds and so on applying a moderate layer of ikumpucky with
maybe a 1/8 inch border and wiping off the excess. When I peel the
tape there is never a good line like with paint, it's always ragged or
smeared. I've tried different wait times but it's never much
different. Is there a technique you salty professionals use? Thank
you.

On Fri, 12 May 2006 10:51:21 GMT, all thumbs
wrote:

I use Sis404, 5200, sikaflex 61a etc and blue tape off the hardware or
window surrounds and so on applying a moderate layer of ikumpucky with
maybe a 1/8 inch border and wiping off the excess. When I peel the
tape there is never a good line like with paint, it's always ragged or
smeared. I've tried different wait times but it's never much
different. Is there a technique you salty professionals use? Thank
you.

3M fineline tape will leave a nice straight edge. Put it down first
then masking tape covering half of it. Available wherever automotive
paint is sold.

all thumbs wrote:

When I peel the
tape there is never a good line like with paint, it's always ragged or
smeared. I've tried different wait times but it's never much
different. Is there a technique you salty professionals use?

Hi:

I ran into the same problem with Dow Corning 795 and Sikaflex 291. Two
considerations:

1) as another guy said, improve technique. Remove tape by: A) pull
directly up, B) pull tape from about a foot plus above the goo and 20
degrees into the bead, c) same as B only 20 degrees away from the bead.
Then try 45 degrees. See what happens

2) the stuff I use is much more manageable when tape is removed
IMMEDIATELY after application of goo. Letting the goo sit for even a
minute will increase the tack and get really stringy.

Like many other things........................ the more you do it the
easier it gets. Ever watch a pro do somehing? Makes it look oh so easy
and look so good when finished? Just takes 10 years five days a week.
bob

Oh, I forgot the obvious................. cut excess off when cured and
sand. Some goos sand well.

Let it cure to the non sticky stage, run a razor blade along the edge
of the tape, then pull...

denny

On 13 May 2006 04:23:48 -0700, "Denny" wrote:

Let it cure to the non sticky stage, run a razor blade along the edge
of the tape, then pull...

denny

I wanted to avoid that as I thought it would defeat the purpose of
making a watertight seal by slicing it with a razorblade. I ended up
doing it anyway just to cut the mess out. I will try sanding a little
too. Thanks all.