Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 22-06-2018, 06:12   #1
Registered User

Join Date: Oct 2010
Location: Blue Mountain Ont
Boat: Beneteau Oceanis 400 40 ft "Camp David
Posts: 435
Tube Grinder Polisher

I am considering the purchase of a 110volt tube grinder / polisher. I want to finish two full lengths of 316 round material to a mirror finish. Additionally polish the stainless rails on my sailboat a couple times a year.

So I have been looking at different products. The good ones are not inexpensive, Metabo is over 800.00! Csunitech is over 700.00

There are a number of offshore products Hardin Roxx and Bluerock all around $200.00

I know you normally get what you pay for however perhaps somebody has some experience and might point me in the direction of a reasonable product at a reasonable price. I donít want to waste my time and money.

Fletch
CampDavid is offline   Reply With Quote
Old 22-06-2018, 11:18   #2
Registered User
 
Suijin's Avatar

Join Date: Feb 2013
Location: Annapolis MD; currently in New England
Boat: Valiant 40
Posts: 4,146
Tube Grinder Polisher

You can buy 316 already polished to a mirror finish at about $8/foot depending on location source.

Those pipe polishers strike me as the wrong tool for the job; too large and unwieldy, difficult to get in tight areas, etc.

Marine fabricator polish using grits of sandpaper, then deburring, then compound with polishing wheels. If all youíre doing is taking out minor scratches then deburring and hitting it with compound is the way to go. Even the deburring is only necessary for deeper scratches.

If itís rust you want to get off, usually in joints welds tight spots then an acid/pickling solution makes short work of it.
__________________
"Having a yacht is reason for being more cheerful than most." -Kurt Vonnegut
Suijin is offline   Reply With Quote
Old 22-06-2018, 13:36   #3
֍֎֍֎֍֎֍֎֍֎

Cruisers Forum Supporter

Join Date: Apr 2006
Posts: 14,569
Re: Tube Grinder Polisher

Fletch-
I think of a grinder, as in an angle grinder, for grinding down welds. Not at all the same thing as a polisher. Any polisher will do the rails, but you will need the right pads and abrasives to do a series of finer grits, perhaps going up to a 3000 grit polish like 3M's "Finesse" to get it mirror shiny. That might mean six different wheels, proper wool wheels perhaps, each charged with a different abrasive polish.
Stainless is always formed on carbon steel tools, which embed iron flakes which always rust. So even the best of stainless needs to be passivated in an acid bath, which is not EPA-friendly, and is not cheap, so it often is not done properly. There are passivating pastes on the market for DIY maintenance. Using one of those will be most effective at keeping down the rust, if they are given a chance to "eat out" the embedded iron specks.

Or you can literally pull the rails and have them sent out for a proper acid bath, if you can find one.
hellosailor is offline   Reply With Quote
Reply

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
use 1/4" die grinder with 1/8" shaft tooling?? Boulter Construction, Maintenance & Refit 19 25-04-2013 20:34
Drilling Hole In S/s Square Tube Weakening Tube? HueyHuey Construction, Maintenance & Refit 19 07-01-2013 17:30
Coffee Grinder ? wingontherock Provisioning: Food & Drink 44 10-12-2011 23:24
What Is the Best Grinder ? renbluefish Construction, Maintenance & Refit 31 23-02-2011 06:30
well i attacked my hull with a grinder scotty Construction, Maintenance & Refit 0 14-08-2008 19:18



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 06:14.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.