VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.

  #1  
Old 01-21-2022, 05:30 PM
wirejock's Avatar
wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 5,215
Default Tip measuring micro

We all use Micro Balloons mixed in epoxy as a filler. It works great, but what happens if you need another batch? The different batches are slightly different densities and sand at different rates. It can cause irregularities in the surface. My Mentor, Dave Paule gave me this idea.
Micro Balloons are light. It's too light to weigh accurately. However, it is basically a liquid. It's very viscous. Measure it by volume.
Use a huge syringe to measure the micro balloons. It pours out really fast. If it won't flow, just pour it. No need for the plunger.
I cut the tip off the syringe at the widest point. Hold a finger over it. Pour in micro. Release the finger and it flows out like water. Turn it upside down to dump the residual in the bottom or you'll have a mess. Just keep track of the measurements and every batch will be very similar in density.
Click image for larger version

Name:	20220121_131238.jpg
Views:	97
Size:	212.6 KB
ID:	21283
__________________
Larry Larson
Estes Park, CO
wirejock at yahoo dot com
Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved (3,000+ hours)
Empennage, wings, fuse, finishing kit done. Working FWF
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
Reply With Quote
  #2  
Old 01-22-2022, 04:13 AM
tyconnell's Avatar
tyconnell tyconnell is offline
 
Join Date: Jul 2007
Location: Keller, TX
Posts: 281
Default

Larry - you always have great stuff!
__________________
Ty Connell
ty.connell@gmail.com
Donated 2021
Reply With Quote
  #3  
Old 01-22-2022, 06:04 AM
DanH's Avatar
DanH DanH is offline
 
Join Date: Oct 2005
Location: 08A
Posts: 10,753
Default

Coffee can and a small measuring cup. Pretty easy to settle on how many cups per 100 grams of resin, or whatever recipe you like.

Pouring micro tends to put too much of it in the air.
__________________
Dan Horton
RV-8 SS
Barrett IO-390
Reply With Quote
  #4  
Old 01-22-2022, 08:36 AM
wirejock's Avatar
wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 5,215
Default Delete

Quote:
Originally Posted by DanH View Post
Coffee can and a small measuring cup. Pretty easy to settle on how many cups per 100 grams of resin, or whatever recipe you like.

Pouring micro tends to put too much of it in the air.
Maybe the Moderators should delete this thread. I don't want anyone, including mysef, to incur liability.
__________________
Larry Larson
Estes Park, CO
wirejock at yahoo dot com
Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved (3,000+ hours)
Empennage, wings, fuse, finishing kit done. Working FWF
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
Reply With Quote
  #5  
Old 01-22-2022, 09:07 AM
David Paule David Paule is offline
 
Join Date: Dec 2009
Location: Boulder, CO
Posts: 5,300
Default

We can leave the thread up... but if anyone has a few tips for eliminating the micro or Cab-O-Sil floating around in the air, I'd be interested.

Perhaps one could leave the nozzle of the shop vac near the operation to suck the errant particles up.

Dave
Reply With Quote
  #6  
Old 01-22-2022, 09:10 AM
jcarne's Avatar
jcarne jcarne is offline
 
Join Date: Jul 2016
Location: Worland, Wyoming
Posts: 2,228
Default

IDK about you guys but I just always wear a mask when I use the stuff. I think just about anything will put the micro in the air.
__________________
Jereme Carne
PPL
RV-7A Flying as of 03/2021
Reply With Quote
  #7  
Old 01-22-2022, 12:09 PM
rocketman1988 rocketman1988 is offline
 
Join Date: Jun 2010
Location: Sunman, IN
Posts: 3,006
Default especially

Quote:
Originally Posted by jcarne View Post
IDK about you guys but I just always wear a mask when I use the stuff. I think just about anything will put the micro in the air.
Same and especially for Cabo...
__________________
Bob
Aerospace Engineer '88

RV-10-ER
N464RL
Going to Paint at Evoke!
Garmin G3X-T, Barrett EFII S32, CAI, MTV-9B

Dues+ Paid 2021,...Thanks DR+
Reply With Quote
  #8  
Old 01-22-2022, 02:22 PM
wirejock's Avatar
wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 5,215
Default Cloud

Quote:
Originally Posted by David Paule View Post
We can leave the thread up... but if anyone has a few tips for eliminating the micro or Cab-O-Sil floating around in the air, I'd be interested.

Perhaps one could leave the nozzle of the shop vac near the operation to suck the errant particles up.

Dave
That's my concern. The particles from mixing are nothing compared to the cloud from sanding. Yes, I wear a respirator and today I used a vacuum attached to the sander.
Particles don't magically dissappear. Even if you don't see the cloud, they are still airborne. Turn off the lights and shine a flash light.
I'm going to try running my bildge blower to pull air out of the shop. Maybe some of the particulates will go out.
I wonder if a big air cleaner would help? Probably have to clean it a lot.
__________________
Larry Larson
Estes Park, CO
wirejock at yahoo dot com
Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved (3,000+ hours)
Empennage, wings, fuse, finishing kit done. Working FWF
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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 -6. The time now is 12:48 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.