Sinful Sandblasting - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > Contributing Authors > Gear and Maintenance Articles
 Not a Member? 


Closed Thread
 
LinkBack Thread Tools
  #1  
Old 07-31-2001
Contributing Author
 
Join Date: Jan 2000
Posts: 251
Thanks: 0
Thanked 4 Times in 3 Posts
Rep Power: 15
Dan Dickison is on a distinguished road
Sinful Sandblasting

I read the comment about removing bottom paint, ending with directions, for after sandblasting, to "just wash off the dust and paint." I am familiar with industrial uses of sandblasting and remain incredulous: Can you paint fiberglass after sandblasting without further surface finishing?

Dan Dickison responds: 
Good question. Thanks for making that point. You're right about the potentially damaging effects of sand blasting on fiberglass hulls. In his very useful book for used boat owners, This Old Boat, Don Casey holds that "fiberglass boats should never be sandblasted." Casey says that this approach might work on steel hulls, but sand blasting makes gelcoat porous, "and almost certainly leads to hull blisters."

In an earlier Ask the Experts answer posted on SailNet, Tom Wood suggests that water blasting (sand and a combination of water jetted onto the surface) is a feasible alternative to sand blasting. Certainly it would be a less destructive option. Another more benign option that's being tried at certain commercial boatyards is blasting with a solution that contains baking soda as the abrasive element instead of sand. The baking soda is mixed with water and both are jetted onto the surface to remove paint and other undesirable elements (tar, etc.) The baking soda works on a smaller scale than sand and thus doesn't remove as much material as quickly.

One additional problem with any kind of blasting is that it tends to leave an irregular surface that will certainly need to be refaired afterward. As you likely know, refairing a hull is time and labor-intensive job, and the expense of that work would probably offset any savings gained from blasting the hull instead of stripping it in more conventional ways.

Here's hoping that this response helps clarify any misunderstanding. Thanks again for making your point.

Quick reply to this message
Closed Thread

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



All times are GMT -4. The time now is 01:23 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.