Taking On Blasting Portion Of Tug Bottom Paint Renewal - Sandblasting - Contractor Talk

Taking On Blasting Portion Of Tug Bottom Paint Renewal

 
Thread Tools Search this Thread Display Modes
Old 06-05-2019, 09:08 AM   #1
Registered User
 
AKtugboater's Avatar
 
Trade: marine construction
Join Date: May 2019
Posts: 7
Rewards Points: 16

Taking On Blasting Portion Of Tug Bottom Paint Renewal


Marine Services contractor here...with a couple questions. Hoping to get some kind advice from a few of you experienced folks.

Not going to pretend to know what I'm doing in regard to blasting, but have been reading enough to give me the confidence to take on the blasting portion of a small project we're doing. Like most small companies, we're always looking for ways to shave expense while holding a high maintenance standard. Hard work and labor we can do.

We have a 75'x 35' steel hulled tug that we're putting a new coat of bottom paint on. Roughly 3000 sq/ft of worn paint (not much rust scale) to remove. The boat is only 5 years old, this is the first bottom paint renewal. The coatings company we're hiring has agreed to rent us thier DB800. We plan on using nickel slag Green Diamond 3060 as media.

My two questions for now are:

How much media should I purchase to do the job thoroughly & well? I'm working in an area that I won't be able to source the media for several days if I run out, so I will calculate a percentage of extra to purchase.
We own a Sullair 185 compressor, should I use it or not bother & rent the 375? I keep seeing air is the ticket to efficiency.

Thanks in advance!
AKtugboater is offline  

Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. ContractorTalk.com DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!

   

Advertisement

 

Old 06-10-2019, 11:34 PM   #2
Member
 
nonobadog's Avatar
 
Trade: media blasting
Join Date: Dec 2014
Location: Whidbey Island Wa
Posts: 99
Rewards Points: 328

Re: Taking On Blasting Portion Of Tug Bottom Paint Renewal


What size nozzle? What pressure? A #6 nozzle needs 175 cfm. You will likely use a minimum of 150lbs per hour. Don't know how to help with how fast the finish will come off not knowing what it is or how clean it has to be. I would figure at about 30sqft per hour?

Hope this helps.

Advertisement

nonobadog is offline  
Old 06-12-2019, 11:27 AM   #3
Registered User
 
AKtugboater's Avatar
 
Trade: marine construction
Join Date: May 2019
Posts: 7
Rewards Points: 16

Re: Taking On Blasting Portion Of Tug Bottom Paint Renewal


Quote:
Originally Posted by nonobadog View Post
What size nozzle? What pressure? A #6 nozzle needs 175 cfm. You will likely use a minimum of 150lbs per hour. Don't know how to help with how fast the finish will come off not knowing what it is or how clean it has to be. I would figure at about 30sqft per hour?

Hope this helps.
Thanks for sharing nonobadog, any information helps at this point. Not that I doubt you, because I really don't know what I'm doing...but I sure hope you are wrong! I just loaded 8000lbs of media to a truck. I estimated 120 sf/hour, 4X faster than you. I also estimated 250lbs an hour. I understand there are all sorts of variables that dictate the answers to my questions. This will be a learning experience for sure.
AKtugboater is offline  
Sponsored Links
Advertisement
 
Old 06-17-2019, 09:28 AM   #4
Registered User
 
AKtugboater's Avatar
 
Trade: marine construction
Join Date: May 2019
Posts: 7
Rewards Points: 16

Re: Taking On Blasting Portion Of Tug Bottom Paint Renewal




Got 8 man hrs into framing up the hooch. Feel like we’re doing alright for first timers. Ahead of schedule so far.


Sent from my iPhone using Tapatalk
AKtugboater is offline  
Old 06-17-2019, 09:49 AM   #5
Contractor
 
tgeb's Avatar
 
Trade: Excavation, Foundation, Concrete
Join Date: Feb 2006
Location: Maryland
Posts: 6,343
Rewards Points: 1,038

Re: Taking On Blasting Portion Of Tug Bottom Paint Renewal


Where is that at? It looks cold.

Keep us posted with updates, looks like an interesting project.
__________________
Tom

www.gebcon.com
tgeb is offline  
Old 06-17-2019, 10:01 AM   #6
Registered User
 
AKtugboater's Avatar
 
Trade: marine construction
Join Date: May 2019
Posts: 7
Rewards Points: 16

Re: Taking On Blasting Portion Of Tug Bottom Paint Renewal


Quote:
Originally Posted by tgeb View Post
Where is that at? It looks cold.

Keep us posted with updates, looks like an interesting project.
Hi tgeb, will do. I've scoured these threads for information & appreciate everyone's experience. We're on the north coast of Alaska, Beaufort Sea. Yesterday was the warmest day of the summer so far. I think it got to 40F. We have a few weeks until we're ice free & can operate...doing spring start up work.
AKtugboater is offline  
The Following User Says Thank You to AKtugboater For This Useful Post:
tgeb (06-17-2019)
Old 06-17-2019, 11:31 AM   #7
Registered User
 
AKtugboater's Avatar
 
Trade: marine construction
Join Date: May 2019
Posts: 7
Rewards Points: 16

Re: Taking On Blasting Portion Of Tug Bottom Paint Renewal


double post....ooops
AKtugboater is offline  
Old 06-19-2019, 05:51 PM   #8
Registered User
 
AKtugboater's Avatar
 
Trade: marine construction
Join Date: May 2019
Posts: 7
Rewards Points: 16

Re: Taking On Blasting Portion Of Tug Bottom Paint Renewal


All hooched up, it took two of us a total of 14 man hours to build. Got the heat pumping into it to melt some ice under the tug...start blasting in 3 days.





Sent from my iPhone using Tapatalk
AKtugboater is offline  
The Following User Says Thank You to AKtugboater For This Useful Post:
tgeb (06-19-2019)
Old 06-19-2019, 06:08 PM   #9
Contractor of the Month
 
Inner10's Avatar
 
Trade: Control Systems
Join Date: Mar 2009
Location: Ottawa, ON
Posts: 25,778
Rewards Points: 4,278

Re: Taking On Blasting Portion Of Tug Bottom Paint Renewal


Quote:
Originally Posted by AKtugboater View Post
All hooched up, it took two of us a total of 14 man hours to build. Got the heat pumping into it to melt some ice under the tug...start blasting in 3 days.





Sent from my iPhone using Tapatalk
Man I thought I was gonna die of heat exhaustion today...and here you are defrosting a tug boat...

Sent from my Pixel 2 using Tapatalk
__________________
The Following User Says Thank You to Inner10 For This Useful Post: Leo G
Inner10 is offline  
The Following User Says Thank You to Inner10 For This Useful Post:
tgeb (06-19-2019)
Old 06-23-2019, 11:30 AM   #10
Member
 
nonobadog's Avatar
 
Trade: media blasting
Join Date: Dec 2014
Location: Whidbey Island Wa
Posts: 99
Rewards Points: 328

Re: Taking On Blasting Portion Of Tug Bottom Paint Renewal


Looks like a good job containing the used grit and debris. Do you have a way to evacuate the dust so you can see what you are doing? With out some ventilation you may blow the plastic off the framework.
nonobadog is offline  
Old 06-23-2019, 05:09 PM   #11
Registered User
 
AKtugboater's Avatar
 
Trade: marine construction
Join Date: May 2019
Posts: 7
Rewards Points: 16

Re: Taking On Blasting Portion Of Tug Bottom Paint Renewal


Quote:
Originally Posted by nonobadog View Post
Looks like a good job containing the used grit and debris. Do you have a way to evacuate the dust so you can see what you are doing? With out some ventilation you may blow the plastic off the framework.
We will have active ventilation on the ground, beneath the bow and stern of the tug. There are also plenty of places along the bulwarks of the tug, hidden by the sheathing that air can escape. If not enough, maybe the hooch will act as a hovercraft skirt and launch the tug right back in the water for us. We're going to give it a test run this afternoon...things about to get real soon. Will update.

Advertisement

AKtugboater is offline  
The Following User Says Thank You to AKtugboater For This Useful Post:
TheConstruct (06-23-2019)


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Join Now... It's Fast and FREE!

I am a professional contractor
I am a DIY Homeowner
Drywall Talk is for
PROFESSIONAL CONTRACTORS ONLY!

At DrywallTalk.com we cater exlusivly to professional contractors who make their living as a contractor. Knowing that many homeowners and DIYers are looking for a community to call home, we've created www.DIYChatroom.com DIY Chatroom is full of helpful advices and perfect for DIY homeowners.

Redirecing in 10 seconds
No Thanks
terms of service

Already Have an Account?