« previous next »
Pages: [1]   Go Down

Author Topic: Finished my seat mold  (Read 2784 times)

0 Members and 1 Guest are viewing this topic.

Offline SHORTROUND

  • Hot Shot
  • ***
  • Posts: 396
Finished my seat mold
« on: August 09, 2012, 06:40:00 am »
Finished my seat mold. Time for resin and cloth........and a Beer 8)
Logged

Offline SOHC4 Cafe Racer Fan

  • Speak up, Whipper-Snapper! I'm a
  • Really Old Timer ...
  • *******
  • Posts: 15,719
  • SOHC/4 Member #1235
Re: Finished my seat mold
« Reply #1 on: August 09, 2012, 09:03:39 am »
That looks great! 
Logged
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline afkrejci90

  • Enthusiast
  • **
  • Posts: 192
Re: Finished my seat mold
« Reply #2 on: August 09, 2012, 11:09:01 am »
What did you make that out of, foam blocks and sanding?
Logged
'78 CB750K http://forums.sohc4.net/index.php?topic=105327.0
'80 CB750C - Sold
'06 CBR600RR

Offline knowsnothing

  • Hot Shot
  • ***
  • Posts: 643
Re: Finished my seat mold
« Reply #3 on: August 09, 2012, 11:51:01 am »
Quote from: afkrejci90 on August 09, 2012, 11:09:01 am
What did you make that out of, foam blocks and sanding?
+1 Would be very interested in the materials and process.
Logged
1978 CB750k Green - 811 engine
1978 CB750k Blue - for sale
1974 CB375F Faded Black - had to have that 6th gear
1976 CB400F Red - in many pieces
1973 CB350F TBD - in many pieces

Offline SHORTROUND

  • Hot Shot
  • ***
  • Posts: 396
Re: Finished my seat mold
« Reply #4 on: August 10, 2012, 05:47:58 am »
The flat base is blue insulation foam; cut then final shape with a disk sander to keep the edge perpendicular. The hump is green florist foam. You can use the blue foam for the entire seat but the green is easier/faster to cut and sand. The rolled eddge is a piece of 1/2" OD tubing. It helps hide the edge of the seat pan and give it smooth line.
Heres a photo of the finished product from my cb450 made the same way.


The mold made with only blue foam. You don't need the rolled edge if you're gonna snap on the cover.

finished seat
Logged

Offline knowsnothing

  • Hot Shot
  • ***
  • Posts: 643
Re: Finished my seat mold
« Reply #5 on: August 10, 2012, 07:28:21 am »
Awesome, thanks for the info!  Both of the other seats came out great.  Is the blue stuff in the top picture some special tape for the glass to help release it?  And are the molds destroyed after each use?  (Last questions promise)
Logged
1978 CB750k Green - 811 engine
1978 CB750k Blue - for sale
1974 CB375F Faded Black - had to have that 6th gear
1976 CB400F Red - in many pieces
1973 CB350F TBD - in many pieces

Offline afkrejci90

  • Enthusiast
  • **
  • Posts: 192
Re: Finished my seat mold
« Reply #6 on: August 10, 2012, 10:32:55 am »
I've started making my own seat but with the pink insulation foam board, it takes forever to sand.  I bet the floral foam is probably the better option.  After you fiberglass the mold, do you use body filler to make a smooth surface to paint?
Logged
'78 CB750K http://forums.sohc4.net/index.php?topic=105327.0
'80 CB750C - Sold
'06 CBR600RR

Offline SHORTROUND

  • Hot Shot
  • ***
  • Posts: 396
Re: Finished my seat mold
« Reply #7 on: August 11, 2012, 05:46:12 am »
Quote from: knowsnothing on August 10, 2012, 07:28:21 am
Awesome, thanks for the info!  Both of the other seats came out great.  Is the blue stuff in the top picture some special tape for the glass to help release it?  And are the molds destroyed after each use?  (Last questions promise)

It's 3M blue tape. the molds are destroyed after each use, But you can reuse the 1/2" tubing.
Logged

Offline SHORTROUND

  • Hot Shot
  • ***
  • Posts: 396
Re: Finished my seat mold
« Reply #8 on: August 11, 2012, 05:49:07 am »
Quote from: afkrejci90 on August 10, 2012, 10:32:55 am
I've started making my own seat but with the pink insulation foam board, it takes forever to sand.  I bet the floral foam is probably the better option.  After you fiberglass the mold, do you use body filler to make a smooth surface to paint?

Body filler is used to smooth out the surface. the floral foam is much easier to shape but you have to make the seat immediatly. The foam shrinks a little after you sand it.
Logged
Pages: [1]   Go Up
« previous next »