Are those mile long sanding blocks a gimmick? - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board
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  #16 (permalink)  
Old 10-05-2006, 10:05 AM
adtkart@aol.com
 
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BK... That's a good idea. Then you'll have an 18" and a 6". I have two 9" ones that I got from cutting an 18". The 18" was less than buying two 9" ones.

Aaron

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  #17 (permalink)  
Old 10-05-2006, 12:01 PM
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That's right Aaron, feed the fire!
How come everytime BK has a good idea it involves me
having to do something????
I'm sure he'll need to borrow something before he leaves
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  #18 (permalink)  
Old 10-05-2006, 12:25 PM
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Quote:
Originally Posted by jcclark
This has really helped my curved surfaces get more consistent.
BK said that if you spent some time with him, using one of those blocks, it would help with your "curved surfaces".

Aaron
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Old 10-05-2006, 01:07 PM
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How can they be effective ??

As most of you guys know from the very basic questions that I've asked and some of the "problem areas" you have helped me thru, I'm a rank amateur when it comes to body work.

I looked at some of the very long blocks with an idea that they might help me finish the car that I have been working on forever. First of all, when I grabbed hold of one, a 24", it felt wrong - that it was not controlable. Any flex that wasn't under my hands could not conform to a rounded panel, that anything longer than a 10 1/2" Durablock which my hands cover wouldn't work right for me. While I do have a 17" rigid long board that I used on the door and trunk, it feels "in control" because it does not flex. If it were possible, some pressure probe pickups would confirm that wherever your hands were, would have higher pressure and would tend to cut lower areas, and any area between them would tend to make a flat - both usually exactly where you don't want them. The idea is great, but the physics are wrong(at least for my untrained hands).

Dave
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Old 10-05-2006, 05:45 PM
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Hey now, we've got a 30 inch long block at the shop. It has a pretty thick sheet of stainless steel for a face. So, it's flexible, but not real flexible. And, I've used it with lots of success. It really is a matter of blocking technique (lots of steady even cross-blocking). Maybe not the tool for the average guy, but, great if you have to skiff a whole roof.

Last edited by colormecrazy; 10-05-2006 at 09:48 PM.
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Old 10-05-2006, 11:53 PM
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The 32inch board I use isn't flexible (oak handle with alluminum plate), works great on long flat panels and I sometimes use it on low crowned areas like roofs but the contact area is smaller. The rigid boards are for shaping and the flexible blocks I use for finer grits after the shaping has been done. Works for me...
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  #22 (permalink)  
Old 10-24-2006, 10:41 AM
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The Long and the Short of sanding

My collectiond of sanding blocks stems from the trditional paint stick to my new 21" longboard (I sent the 36" back because it was too clumsy to use). I have found that whatever method you prefer in sanding, it's always best to use the longest board possible. This doesn't mean to use a 4' board because your roof is 5' long. The longest board you feel comfortable with that still allows for straight even pressure strokes is where I like it. I agree with all who like the 17". Sticky back paper is readily available and the length seems to suit me for most of my needs. My 21" requires that I buy 3M Gold 45yd rolls. somewhat of a cost savings and no leftover paper to throw away. The adjustability of this longboard is sweet when it comes to initial sanding.

In my favorite of restoration (Old Trucks), the 21" is about as long as I can go due to the rounded bodylines of yesteryear. About the only place that I really see a primary use for this length is on the hoods and roof. The 17" and smaller covering everything else. I will tell you that one project I found that would require 21" or longer board is a 27' foot boat that I had the pleasure of repainting. Since most of the surface was flat and highly streamlined, the "longer the board the better".
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  #23 (permalink)  
Old 11-01-2006, 07:57 AM
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The area where I have seen long boards used to good effect was on boat hulls -- long (30 feet) continuous curves. And the really fussy guys do get somewhat better results with them, but to tell you the truth I have seen other people do just as well not using anything longer than 18 inches. I think it is more a matter of preference. The fussiest guy in my area swears by them, but the guy I prefer to use when I have work done does not use them and gets as good a result.
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Old 11-02-2006, 03:10 PM
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Flexblock?

Quote:
Originally Posted by jcclark
My longest block is 17", I rarely use it though, most times my smaller
ones do just fine.
I recently tried a new block I really like for curved panels. It's
called "Flexblock" and is just like my other foam blocks but has slots
cut in the top that allow it to flex and follow the contours.
This has really helped my curved surfaces get more consistent.
Where can a flexblock be found? What brand & maybe part number? Thanks
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  #25 (permalink)  
Old 11-02-2006, 03:27 PM
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Quote:
Originally Posted by texczech
Where can a flexblock be found? What brand & maybe part number? Thanks
Any local autobody supply jobber should have these or something similar in stock.

Here's a link to Eastwood Tools 3pc kit $155.00 - you can buy them individually if you like.



Eastwood 3pc Adjustable Sander Kit
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  #26 (permalink)  
Old 11-03-2006, 12:16 AM
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I have that long green Eastwood block and LOVE it. They will have to pry it out of my cold, dead hands to get it away from me. Ain't no panel nowhere I cain't get super straight with it.
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  #27 (permalink)  
Old 11-03-2006, 06:16 AM
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Here's my favorite all around block.
It'll take 2 3/4" sticky roll paper or std sheet cut in fourths.
It's firm and waterproof.
http://cgi.ebay.com/ebaymotors/Prepp...temZ7984242769

Here's the long ones, these are as good as it gets
http://cgi.ebay.com/ebaymotors/Set-o...spagenameZWDVW

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  #28 (permalink)  
Old 11-03-2006, 07:58 AM
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Does everyone agree that these are better than Durablocks?
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  #29 (permalink)  
Old 11-03-2006, 08:05 AM
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i love my durablocks. my favorite is the long 1 in. it will shape anything.
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  #30 (permalink)  
Old 11-03-2006, 08:11 AM
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So which is it? Durablocks or FlexBlocks? I'm ready to buy!
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