Problems applying glaze putty

browneye253

I picked up some bondo glaze putty and started working on the body of my cart. I gave it a bath, wiped it down with wax degreaser and then pulled out the bondo.

My problem is the stuff seems to dry very fast and become difficult to work with and stops spreading smoothly. Is this to be expected? Should I try a different product?

Should I have primed first then started with the body work or did I do the steps correctly?

Here are a few images of my amazing work.

BGW

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baddsn95

Body filler should not be put on painted surfaces. Are you filling scratches?
If you are filling minor pits and scratches there is a product for that,it's a 2
Part finishing cream. It should be applied over surface's sanded with a 180 or 320 grit. You will only have a few minutes of work time so mix small amounts. I have used overcoat and usc products with excellent results

browneye253

I took a red scotch pad to the cowl and scuffed it really good. I'm filling scratches and a few deeper gouges. The stuff I'm using works great for about a minute and then it starts to clump up. I think I just need to do the initial spread and then let it dry and sand.

I'm happy to hear I wasn't supposed to prime first. Guess it's back to filling and sanding.

master66

So it is clumping up because it is starting to cure. If you have larger jobs to do and want more work life then you need to add less hardener. It really doesn't take much hardener to get the glazing putty to cure. The amount of hardener in the small tube is enough to cure the whole tube of glazing putty so take that into account when mixing.

browneye253

I'm using Bondo Glazing & Spot Putty http://goo.gl/LTj1YI

I'm pretty sure it's a premixed product or that's what I'm hoping because that's how I've been using it. I watched a few videos on using glaze and the stuff they used seemed a little more fluid that this stuff which is a little thicker.

Master I noticed in another thread that you recommended the USC Icing would this be easier to work with on a larger area?

The body I'm working on has some scratches / gouges that run down the side of the cart. I was getting the clumping and pitting when I was working to fill those. I should probably have worked on it in smaller sections but I was trying to fill the entire scratch at once.

Thanks again for all the help and tips.

master66

So I can't open the link but it sounds like what you are using is a spot putty used for very small areas. PPG used to have one that was called red cap. My advice to you is to sand off all of the spot putty and get some 2 part polyester glazing putty. You will find that much easier to work with and is what you need for your application.

browneye253

I ordered some USC Icing which I believe you mentioned in another thread. I'll get to sanding on the other filler and get it prepped for the new stuff. Hopefully with much better results.

Thanks again.

master66

Trust me you will like it much better.

aacorp

I'm a big fan of the USC Icing, I find that it spreads well and sands very easy. You can final sand with some 400 or 600 grit paper and it will come out great.

browneye253

Is there a rule of thumb on when a scratch will become to deep to fill with the icing?

My current plan at doing the body work is the following steps.

Scuff the body with red scotchbrite pad

Clean body with wax and grease remover

Apply icing glaze

Sand with 320

Clean area again

Apply icing to any low areas or areas needing touch up

Sand with 400 - 600

Clean again

Then apply primer

Hopefully I'm heading in the right direction.