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914World.com _ 914World Garage _ Is it necessary?
Posted by: Speedo Sep 29 2021, 08:35 AM
Ready to install new glass on fresh paint. 3M butyl primer is not allowed for sale in CO, and I can't find a similar substitute. I already have the butyl tape, so I don't want to go the Urethane adhesive route. As the area where the butyl will lay is clean enough to eat off of it...am I ok to just install the butyl by itself?
Posted by: Shivers Sep 29 2021, 08:43 AM
Seems you should be ok without it, being clean.
http://914world.com/bbs2/index.php?showtopic=312146
Posted by: 76-914 Sep 29 2021, 09:16 AM
Just be sure both surfaces are clean and free of oils and waxes. 
Posted by: 914werke Sep 29 2021, 10:05 AM
no
Posted by: Speedo Sep 29 2021, 01:47 PM
no
Probably the shortest quote yet for 914world.
"no". Any further comment would be entertained.
Posted by: 930cabman Sep 29 2021, 03:23 PM
Clean, dry and sound are all that's required. Did you source 5/16" round?
Posted by: 914_teener Sep 29 2021, 03:29 PM
Ready to install new glass on fresh paint. 3M butyl primer is not allowed for sale in CO, and I can't find a similar substitute. I already have the butyl tape, so I don't want to go the Urethane adhesive route. As the area where the butyl will lay is clean enough to eat off of it...am I ok to just install the butyl by itself?
I use acetone which they still sell in California BTW at Home Depot.
Your hands itself carry a fair amount of grease and oils. I know it's not aerospace but why chance a leak?
That'd be my .02.
Oh....wear gloves when using acetone...it's bad stuff but cleans like a mother.
Posted by: NARP74 Sep 29 2021, 04:59 PM
Ian just did a video on this. Perhaps you could get someone to purchase the primer for you and send it to you. Calirado...
Posted by: maf914 Sep 29 2021, 05:13 PM
Not a windshield, but I reset my rear window using butyl tape. I cleaned the glass and body work and wiped every thing down with mineral spirits multiple times. Put the tape in, put the glass in, pressed it in. That was about 20 years ago and it is still in place.
Posted by: Speedo Sep 29 2021, 06:14 PM
Clean, dry and sound are all that's required. Did you source 5/16" round?
Yes 914Rubber provided. I have acetone and gloves...I'm good to go.
Posted by: bbrock Sep 29 2021, 08:02 PM
Clean, dry and sound are all that's required. Did you source 5/16" round?
Yes 914Rubber provided. I have acetone and gloves...I'm good to go.
Double check the size. The tape I got from 914Rubber was 3/8". You really want 5/16" It does make a difference.
Posted by: IronHillRestorations Sep 30 2021, 06:36 AM
I wouldn’t put a windshield in without it
Posted by: Montreal914 Sep 30 2021, 08:18 AM
Acetone can leave a residue. Maybe clean with alcohol after the acetone? 
Posted by: Mikey914 Sep 30 2021, 11:14 AM
No not required. It does however allow for better adhesion to the substructure. The frit was actually designed to be applied to glass for some glazing applications. It etches the glass and allows the adhesive to grab it.
I haven't put this up for awhile but it may be helpful to make the setting blocks as shown.
Paint degreaser works well too
Attached image(s)
Posted by: rbzymek Sep 30 2021, 01:23 PM
@http://www.914world.com/bbs2/index.php?showuser=24781
You can use my can of CRL if you provide $5 for shipping. The only requirement is that you offer it to someone else when you are done. Let's see how many applications are in a can.
Posted by: Shivers Sep 30 2021, 06:15 PM
@http://www.914world.com/bbs2/index.php?showuser=24781
You can use my can of CRL if you provide $5 for shipping. The only requirement is that you offer it to someone else when you are done. Let's see how many applications are in a can.
Thanks for the offer, I do appreciate it. But it's the other guy, @http://www.914world.com/bbs2/index.php?showuser=7170 .
Posted by: Mikey914 Sep 30 2021, 06:29 PM
Yep you can't buy it anymore.
Posted by: IronHillRestorations Oct 1 2021, 07:10 AM
http://www.amazon.com/3M-08681-Single-Step-Primer/dp/B000PEZAU6/ref=asc_df_B000PEZAU6?tag=bngsmtphsnus-20&linkCode=df0&hvadid=80882941400083&hvnetw=s&hvqmt=e&hvbmt=be&hvdev=m&hvlocint=&hvlocphy=&hvtargid=pla-4584482468236180&psc=1
Posted by: Speedo Oct 1 2021, 09:48 AM
@http://www.914world.com/bbs2/index.php?showuser=24781
You can use my can of CRL if you provide $5 for shipping. The only requirement is that you offer it to someone else when you are done. Let's see how many applications are in a can.
Thanks for the offer...PM sent!
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