Bonding glass scoop to steel hood? - Page 2
Have an account? Register

Forgot your password?

Forgot your username?

 
Likes Likes:  0
+ Reply to Thread
Page 2 of 2 FirstFirst 1 2
Results 11 to 16 of 16
  1. #11
    Official RnS Addict bigjob's Avatar
    Join Date
    Apr 2009
    Location
    sheffield
    Posts
    4,207
    Images
    1071
    Post Thanks / Like
    bigjob is offline
    There's quite a few 2pack panel bonding adhesives avalable nowadays(most of them derived from the aircraft industry)The one i would use is 3M-08115,it will not crack (in normal use)Thatchem reseach centre glued a cavalier body shell together around 79/80ish, using this stuff and it was still flying around there place in the late 90's !,Bry
    My Intro
    Insurance Repairs, MOT Work
    or Full On Restorations

    Roberts Motor Bodies

    Home of Henry Hirise
    Click to visit our website.

    View the Henry Hirise Re-Build

    When was the last time you did something for the first time ?

  2. Remove Advertisements
    RodsnSods.co.uk
    Advertisements
     

  3. #12
    Official RnS Addict Dave'29Ford's Avatar
    Join Date
    Jun 2009
    Location
    Teesside
    Posts
    935
    Images
    4
    Post Thanks / Like
    Dave'29Ford is offline
    How about some Dzus fastener plates coming up vertical inside the scoop and the Dzus buttons on the bottom edge outside the scoop. I recently did one in this way to avoid the problems your concerned about.

  4. #13
    ready salted evilzee28's Avatar
    Join Date
    Apr 2009
    Location
    spooks central
    Posts
    1,810
    Images
    60
    Post Thanks / Like
    evilzee28 is offline
    Righto here we go I've done an awful lot of this over the years having owned my own fibreglass laminating shop supplying & fitting 'glass panels to steel bodies. Firstly DO NOT!!!! use SMS to bond on panels, it's not designed for this & will crack!! it'a a fibreglass/kevlar mix that is used to repair plastic parts or can be used like the old "Bridge A Gap" to fill holes. Please don't use it to bond panels to steel.

    Firstly set the scoop onto the bonnet & position it where it needs to go. Once happy with the fit, drill a series of 1/8" holes through the scoop mounting flange into the hood & secure with self tappers. Drill the holes around 2" apart. Remove the scoop & grind off the paint from your hood using a 24 grit disc, this will give a good key before glassing the scoop on. Grind an area of approximately 4-5 inches wide, with 1" to the inside of the drilled holes. Then grind the underside of the scoop flange until it's about 1/8" thick, again with a 24 grit disc, this should make the underside of the 'glass flange smooth without any undulations of matt visible. Trial fit the scoop to the hood again.


    Once happy with the fit, remove the scoop & cut some strips of 450 gramme chopped strand fibreglas matt around 2" wide. Make sure you have enough cut for 2 layers. Mix your resin & catalyst together & brush onto the bare metal. Then lay the 2 layers of matte onto your steel hood covering your pre drilled holes. allow 1/2" to the inside of the holes & the remaining 1 1/2" to the outside of the holes. Align your scoop into place & now screw the self tappers into all of the holes. This will compress the wet matte between the steel hood & the 'glass scoop. You should now have approximately 1 1/2" of matte visible from the edge of your scoop around the whole of your scoop.

    Leave to cure for 48 hours. Once fully cured, remove the screws. Now at this stage most people get out the SMC or body filler & blend to shape. NO!! At this point the scoop is only bonded to the surface of the 'glass/steel hood & still has the holes that were drilled in it visible.We need to "sandwich" the scoop between the glass on the hood & an outer layer of glass. The next thing to do is to grind down the 1 1/2" of 'glass along with the top flange from the scoop until it "blends" into the steel hood. Once happy that there are no "steps" between the scoop flange, 'glass & steel hood, clean with some pre paint wipe & blow off with an airline, this will remove any dust/residue left from grinding down the 'glass.

    Now at this point you still have the 1/8" holes that were drilled from the initial bonding process. Again cut some strips of 'glass matte 3" wide, (enough for 2 layers). Mix up your resin & catalyst & brush it over the scoop flange, covering the holes & also over the 'glass that's left protruding from the bonding process. Lay your 2 layers of matte over that & then use a steel roller (obtained from your 'glass suppliers) to roll out the resin & matte. This will remove any air bubbles trapped in the 'glass/resin. Allow to cure for 48 hours.

    Once fully cured, again grind this lot smooth until it gently blends into the steel hood without any "steps or undulations". Once happy, pre paint wipe, blow clean & then get to work with the filler. I firstly use one small skim of SMC to fill any of the small holes left in the 'glass after grinding, followed by body filler. To get it so that you're unable to notice the transition between the 'glass & the steel hood you'll probably end up making the filler repair 6-8" out from the 'glass scoop. If done correctly this will not crack

    Once it's all to the desired shape, sand it down & coat it with some epoxy or etch primer, followed by your 2k primer. Hope that helps,


    cheers.....Nige
    Last edited by evilzee28; 25-11-2009 at 12:19.

  5. Remove Advertisements
    RodsnSods.co.uk
    Advertisements
     

  6. #14
    Official RnS Addict
    Join Date
    Apr 2009
    Location
    watford
    Posts
    1,109
    Images
    0
    Post Thanks / Like
    firebird68 is offline
    Thanks to all of you for taking the time to help me out , the great thing about this site is the talented people who are happy to share their experience,best wishes to you all.
    Nige, I will try the method you gave me, might even take some pix and post on here so you can see the results.

  7. #15
    Exceeded sell by date Plumpcars's Avatar
    Join Date
    Apr 2009
    Location
    London Heathrowish!
    Posts
    7,721
    Images
    46
    Post Thanks / Like
    Plumpcars is offline
    Happy to say I was wrong!

  8. #16
    ready salted evilzee28's Avatar
    Join Date
    Apr 2009
    Location
    spooks central
    Posts
    1,810
    Images
    60
    Post Thanks / Like
    evilzee28 is offline
    Quote Originally Posted by firebird68 View Post
    Thanks to all of you for taking the time to help me out , the great thing about this site is the talented people who are happy to share their experience,best wishes to you all.
    Nige, I will try the method you gave me, might even take some pix and post on here so you can see the results.
    No worries, glad to help . Any queries let me know & I'll try to help, cheers....Nige

+ Reply to Thread
Page 2 of 2 FirstFirst 1 2

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Where you live, Town\City\County etc.

Please enter your full name
This field cannot be edited once it has been completed other than via contacting the site admin. Please make sure the information is correct first time.

Log-in

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

    Similar Threads

    1. Ridiculous rear spoiler and hood scoop needed urgent
      By Battersea Boys in forum Stuff - WANTED
      Replies: 3
      Last Post: 17-05-2010, 21:47
    2. 34 steel hood sides,
      By 55zephyr in forum Stuff - WANTED
      Replies: 0
      Last Post: 08-05-2010, 21:15
    3. Goodmark Steel Cowl Induction Hood
      By autoholic in forum Stuff - FOR SALE
      Replies: 0
      Last Post: 21-03-2010, 18:14
    4. 1930/31 Model A Ford original steel hood sections
      By Clean Kev in forum Stuff - FOR SALE
      Replies: 2
      Last Post: 18-03-2010, 20:28
    5. Steel 32 Ford hood (bonnet) sides
      By PeteF in forum Stuff - WANTED
      Replies: 1
      Last Post: 02-02-2010, 14:13

    Tags for this Thread

    Bookmarks

    Posting Permissions

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