bumps in fiberglass

Home / the12volt's Install Bay / Fiberglass, Fabrication, and Interiors / bumps in fiberglass (

Topic Closed)

Welcome Guest :)

Members

Next Page > < Prev Topic Next Topic >

bsinnest

Member - Posts: 20

Joined: July 10, 2005

Location: Canada

Posted: August 26, 2005 at 8:54 PM / IP Logged

hey guys. haha, i am fiberglassin my door panels and i didn't put that much fiberglass on. and i did the bodyfill stage, but i screwed up somewhere. cause when i run my finger across the project i feel these bumps like the thing isn't that smooth at all. and i sanded it for a long time. it just seems like it is going to be impossible to have it all smooth. Any advice on this topic would help me alot. i mean even if you said to torch it or something lol. thanks guys

auex

Platinum - Posts: 5,041

This member has made a donation to the12volt.com. Click here for more info.

Joined: December 23, 2002

Location: Arizona, United States

Posted: August 26, 2005 at 9:26 PM / IP Logged

Sand, sand, sand, sand some more, sand, sand, sand even more, etc... Only thing you can do. Lightly spray it with black spray paint, don't coat just go over it and spot it with the paint, you will see the bumps when there is contrast.

Certified Security Specialist

Always check info with a digital multimeter.

I promise to be good.

Tell Darwin I sent you.

I've been sick lately, sorry I won't be on much.

bsinnest

Member - Posts: 20

Joined: July 10, 2005

Location: Canada

Posted: August 26, 2005 at 11:21 PM / IP Logged

thanks. according to your bumps, i have a feeling that i have alot of sanding to do!. lol i'll get on it tomorrow, and i'll try that black paint thing, sounds good. i'll take pics of it when i am done. its a panel for a mazda mx3

bsinnest

Member - Posts: 20

Joined: July 10, 2005

Location: Canada

Posted: August 26, 2005 at 11:22 PM / IP Logged

according to your advice***

abovestock

Copper - Posts: 247

Joined: June 08, 2005

Location: United States

Posted: August 27, 2005 at 1:33 AM / IP Logged

I hope it is not like the old mustang trunk project with tons of Bondo lol. Use a paint stir stick with the sand paper to be sure that it is flat. This will help you sand faster and save time in do overs. Also sand your glass flat before you apply any body filler, and use a random orbital sander to cut down on time.

bsinnest

Member - Posts: 20

Joined: July 10, 2005

Location: Canada

Posted: August 27, 2005 at 10:43 AM / IP Logged

yea, i hope it isn't that bad either. its all i got for door panels lol. I'll keep on trying, but could you elaborate a litte more on the paint stir stick thing? cause its in a groove. and the random orbital sander does help alot. Thanks.

abovestock

Copper - Posts: 247

Joined: June 08, 2005

Location: United States

Posted: August 28, 2005 at 2:37 AM / IP Logged

I use this to block out cars. I don't see what you are doing so it is hard for me to picture. I take a paint stir stick and wrap sand paper around it to make sure what I am sanding comes out flat. If you sand just with your hand you get waves and bumps that form because of uneven pressure. If you can add some pictures so that we can better help you.

darkknight1999

Member - Posts: 13

Joined: April 02, 2004

Location: United States

Posted: September 10, 2005 at 8:52 AM / IP Logged

You should get a sanding block or better yet an air sander if you have the cash. This will sand it without your fingers making marks in it. If you sand by hand you might be pressing to hard, and when you do that your leaving low spots in the finish because you don't have the same pressure inbetween your figers as you do at your fingertips.

You can also use a high build primer to help fill in the low spots once to sand. Use a different color compared to whatever color your filler is so you can see the difference while you sand.

-JOHN

www.rimotorsports.com

Search for other posts by darkknight1999

Velocity Motors

Moderator - Posts: 12,488

This member has been recognized as an authority in Electrical Theory. Click here for more info.

This member has been recognized as an authority in Fabrication. Click here for more info.

This member has been recognized as an authority in Mobile Audio and Video. Click here for more info.

This member has been recognized as an authority in Mobile Security and Convenience. Click here for more info.

Joined: March 08, 2002

Location: Manitoba, Canada

Posted: September 10, 2005 at 9:35 AM / IP Logged

Here's what I would do ( listen up trade secret coming : ) Mix up another batch of bodyfiller and spread it on until smooth again. Take the courses sand paper you can get in a sanding block form and wait until the body filler is about 3/4 dry and start lightly sanding. The body filler will start pilling up and will roll off the peice in large rolls of body filler. This is what you want & you will probably need to remove the sand paper a couple of times because it will fill up with the body filler fast. Your project will be smooth, flat & bump free with this method.

Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA

Search for other posts by Velocity Motors

bsinnest

Member - Posts: 20

Joined: July 10, 2005

Location: Canada

Posted: September 11, 2005 at 10:14 PM / IP Logged

that sounds like a good idea Velocity Motors, and i am going to attempt to do that as soon as i finish putting in the standard transmission and engine, (hopefully this week) then hopefully all works out that i can get that trick to work for me and have my panels smooth, what coarse sand paper grit would you prefer, like the 40-80 grit (automotive sand paper) or should i start in the 100's?

Thanks for the tips.

Brian.

Next Page >

Printable version

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

Search the12volt.com

Follow the12volt.com

Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.