Ye Olde Rocket Forum

Go Back   Ye Olde Rocket Forum > Work Bench > Building Techniques
User Name
Password
Auctions Register FAQ Members List Calendar Today's Posts Search Mark Forums Read


Reply
 
Thread Tools Search this Thread Display Modes
  #21  
Old 10-21-2010, 12:03 PM
jeffyjeep's Avatar
jeffyjeep jeffyjeep is offline
Old Submariner
 
Join Date: Jan 2009
Location: Home of Wayne & Garth
Posts: 7,772
Default

Quote:
Originally Posted by LeeR
Here you go ...

Thank you! I'll send Mary to THD for a tin.
__________________
Never trust an atom. They make up everything.

4 out of 3 people struggle with math.

Chemically, alcohol IS a solution.

NAR# 94042
SAM# 0078
Reply With Quote
  #22  
Old 10-21-2010, 12:07 PM
jeffyjeep's Avatar
jeffyjeep jeffyjeep is offline
Old Submariner
 
Join Date: Jan 2009
Location: Home of Wayne & Garth
Posts: 7,772
Default

Quote:
Originally Posted by ghrocketman
Aero Gloss does NOT gum up paper providing you sand with the CORRECT paper/film.
I use K&S flexi-grit washable sanding film.
It is available in variety paks in ANY decent hobby shop.
Generally I use the two black and one orange sheets.
Throw out the red and tan sheets; they are FAR too fine to be of ANY value.

Same here. I don't have a problem with Aerogloss gumming up when using the correct sandpaper and sanding the AG after it's completely dry (which doesn't take very long).

It's always completely dry and hard by the time I've been revived.
__________________
Never trust an atom. They make up everything.

4 out of 3 people struggle with math.

Chemically, alcohol IS a solution.

NAR# 94042
SAM# 0078
Reply With Quote
  #23  
Old 10-21-2010, 12:17 PM
BlackBrant BlackBrant is offline
Intermediate Rocketeer
 
Join Date: Nov 2009
Posts: 72
Default

I sand with 320 3M paper and no gum up at all.I use SIG...but preyy much the same stuff as Aerogloss.

Paul
Reply With Quote
  #24  
Old 10-21-2010, 12:36 PM
jeffyjeep's Avatar
jeffyjeep jeffyjeep is offline
Old Submariner
 
Join Date: Jan 2009
Location: Home of Wayne & Garth
Posts: 7,772
Default

Same here. I use 320 for coats 1,2, and 3, and 400 after the final coat.

Resulting in...........
Attached Thumbnails
Click image for larger version

Name:  trident06-10 (4).JPG
Views: 104
Size:  366.4 KB  Click image for larger version

Name:  canadianarrow08-10 (4).JPG
Views: 120
Size:  351.0 KB  Click image for larger version

Name:  pinupv206-10 (7).JPG
Views: 111
Size:  378.5 KB  Click image for larger version

Name:  derredmax10-09 (5).JPG
Views: 121
Size:  141.0 KB  
__________________
Never trust an atom. They make up everything.

4 out of 3 people struggle with math.

Chemically, alcohol IS a solution.

NAR# 94042
SAM# 0078
Reply With Quote
  #25  
Old 10-21-2010, 05:33 PM
kurth's Avatar
kurth kurth is offline
Low and Slow
 
Join Date: Aug 2010
Posts: 46
Default

Thanks for the pointers. I have been using 3m 400 wet or dry for each coat and it not only loads the sandpaper, it gets so nasty like paint was splattered on it that I can not wash off. I think I have some of that K&S stuff in my sandpaper stash. Or perhaps it is not quite dry.

Any way I went to my local BORG and they did not have DEFT products, only Minwax sanding sealer, and only in a fairly large can for $15 ... more that I want to spend on something that is unproven.
Reply With Quote
  #26  
Old 10-21-2010, 09:57 PM
LeeR's Avatar
LeeR LeeR is offline
Retired with Way Too Many Kits
 
Join Date: Jun 2007
Location: Colorado
Posts: 3,222
Default

Quote:
Originally Posted by kurth
Does this stuff gum up sand paper the way aerogloss does? If not then I will give it a try


Sands incredibly easily, no gumming of sandpaper. I never remember any issues with AeroGloss, and my most recent sanding sealer was SIG. No problems with it, either. However, I had to constantly thin the SIG with acetone, and the Deft brushes on beautifully. But you would expect this from a product meant to be brushed onto wood!

I think Home Depot may have had pints, but a quart is cheap enough if not. I noticed that Deft also sells this in aerosol cans, but I did not notice if Home Depot carried it. The brushing is so easy, that I'd not likely even consider spraying on a sealer.
__________________
Lee Reep
NAR 55948

Projects: Semroc Saturn 1B, Ken Foss Designs Mini Satellite Interceptor
In the Paint Shop: Nothing! Too cold!
Launch-Ready: Farside-X, Maxi Honest John, Super Scamp
Reply With Quote
  #27  
Old 10-22-2010, 08:51 AM
ghrocketman's Avatar
ghrocketman ghrocketman is offline
President, MAYHEM AGITATORS, Inc.
 
Join Date: Jul 2005
Location: Nunya Bizznuss, Michigan
Posts: 13,501
Default

If one uses Acetone as thinner for Butyrate Dopes (Including Sanding Sealer) one would have to thin it all the time as that stuff evaporates so quickly; about the only common-place organic solvent that evaporates more quickly is Diethyl Ether. Acetone is a VERY specialized thinner for dopes that really should not be used straight unless using in very cold temps.
Better to use a mixture of Toluene, MEK, and MIBK.
If I was going to use just one organic solvent for my "go to" dope thinner it would be MIBK; second place would be Toluene, but only because I hate the smell of MEK.

A GOOD replacement thinning mixture for Aero Gloss/Sig thinner is below:

40% Toluene
30% MIBK
15% MEK
15% Acetone

The Acetone can be skipped and the percentage of MIBK or MEK can be increased.
__________________
When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL
, if you have to ask what is "NORMAL" , you probably aren't !

Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, and HAVOC !
Reply With Quote
  #28  
Old 10-22-2010, 01:40 PM
BlackBrant BlackBrant is offline
Intermediate Rocketeer
 
Join Date: Nov 2009
Posts: 72
Default

I`ve always used lacquer for thinning SIG sanding sealer ,usually 50/50 for the first coat (so it absorbs into the grain & pores ,then a thicker mix for the remaining coats.As mentioned, it doea dry very fast ,but works well for me.I wash my brush in lacquer as well.

Paul
Reply With Quote
  #29  
Old 10-22-2010, 03:12 PM
Doug Sams's Avatar
Doug Sams Doug Sams is offline
Old Far...er...Rocketeer
 
Join Date: Mar 2005
Location: Plano, TX resident since 1998.
Posts: 3,965
Default

Quote:
Originally Posted by kurth
Any way I went to my local BORG and they did not have DEFT products...
The big box stores - Lowe's and HD - tend to be pretty supplier-inflexible. If there's not some big, corporate agreement with a major supplier, they don't carry their products at all. For example, about half the stuff in the paint aisle at HD all comes from RustOleum (eg, Zinsser and RustOleum are from the same company). So smaller suppliers have difficulty getting shelf space there.

The older, mom-n-pop hardware stores are the place to look for stuff like Deft. You might pay a bit more, but the variety will often be very good. We have a place near my office called Turner's Hardware that has a very good assortment of stuff like this.

Doug

.
__________________
YORF member #11
Reply With Quote
  #30  
Old 10-23-2010, 12:47 AM
LeeR's Avatar
LeeR LeeR is offline
Retired with Way Too Many Kits
 
Join Date: Jun 2007
Location: Colorado
Posts: 3,222
Default

Quote:
Originally Posted by ghrocketman
If one uses Acetone as thinner for Butyrate Dopes (Including Sanding Sealer) one would have to thin it all the time as that stuff evaporates so quickly; about the only common-place organic solvent that evaporates more quickly is Diethyl Ether. Acetone is a VERY specialized thinner for dopes that really should not be used straight unless using in very cold temps.
Better to use a mixture of Toluene, MEK, and MIBK.
If I was going to use just one organic solvent for my "go to" dope thinner it would be MIBK; second place would be Toluene, but only because I hate the smell of MEK.

A GOOD replacement thinning mixture for Aero Gloss/Sig thinner is below:

40% Toluene
30% MIBK
15% MEK
15% Acetone

The Acetone can be skipped and the percentage of MIBK or MEK can be increased.


I'll take your word for it regarding a good replacement, but for the cost of buying all those thinners, you might as well toss the dope sealers and just go with Deft! If it ever needed thinning, it is a lacquer, and so common, easy to find lacquer thinner can be used. I'm already sold on it (admittedly, I have limited experience with it, with only one use on a nose cone). What little SIG sealer I have will likely get used, but I don't plan on buying it again, mainly due to cost, although I was much more impressed with the way the Deft goes on.
__________________
Lee Reep
NAR 55948

Projects: Semroc Saturn 1B, Ken Foss Designs Mini Satellite Interceptor
In the Paint Shop: Nothing! Too cold!
Launch-Ready: Farside-X, Maxi Honest John, Super Scamp
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump



All times are GMT -5. The time now is 06:06 AM.


Powered by: vBulletin Version 3.0.7
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Ye Olde Rocket Shoppe © 1998-2024