Question 1

Do the bristles break off while the brush is being used?

Accepted Answer

I've used this type of scratch brush for more than 35 years and there are a few lessons learned. My uses have always been to clean and score surfaces removing paint, oxides (rust), and the like. The only 'artistic' thing I use the brush for is to provide a brushed texture to metal or plastic.
The things you need to know:
- Pieces of fiberglass break off the brush. This is normal.
- If the leftover pieces of fiberglass get on your hands, some will get stuck in your skin causing irritation until removed.
- Often I hold my work over a trash can allowing the fiberglass particles to fall downward and away from your hands, of course. Tapping the work to shake loose particles helps too. DO NOT use an air nozzle to blow off the particles unless you're working under a vacuum hood.
- The other option, and it's probably the cleanest, is to use a vacuum cleaner to collect the bits of fiberglass as they break off. You may need a 'third hand' fixture for this.
- Keep the bristle length short, less than 1/8" or 3mm. 
- IMPORTANT -> You can minimize breaking, as well as get more work done, by pushing on the fibers (on axis) rather than brushing (a radial motion). 
- There are some situations requiring a brushing action, for texture and the like. Keeping the brush length short helps prevent the bristles from breaking.
- There's a similar glass brush that's about 2mm diameter. I use this brush most often. The length of the refill is much longer too. The refills fit very nicely into old collet style drafting pencils (of which I have a few), so I've never bought a brush holder, just the refills. I recommend this over the brush you're using.

Good luck & Good skills

Question 2

What is the diameter of the fiberglass insert?

Accepted Answer

slightly les than 1/4'' see brush is 5'' overall

Question 3

How do you install a refill?

Accepted Answer

Hi, I unscrewed the metal tip (at the brush end of the pen) and extended the brush as far as it would go. I gently tugged the brush out of the end of the holder. As I have plenty of brush left, I pushed the brush back in to the holder, replaced the metal tip and it works just fine.

Question 4

How to use the brush on coins

Accepted Answer

Beginners Guide to Gilding
1 - Prepare And Prime The Surfaces. Lightly sand the surface to be gilded, if necessary and apply a suitable primer. ... 
2 - Apply Adhesive Size. "Size" is the name given in the trade to the adhesive used to fix the leaf to the surface. ... 
3 - Apply The Leaf. ... 
4 - Finishing. ... 
5 - Protection. ... 
6 - The Finished Result!

You use the fiberglass pen in step 4.. Once you apply the gold leaf, use the fiberglass pen to smooth down the gold leaf, to get it to adhere to the metal surface, without air trapped between the gold leaf and the coin.

Remember not to touch the fiberglass pen with your hands.

Manufacturer	Sona Enterprises
Part Number	7616SB
Item Weight	0.01 ounces
Product Dimensions	5 x 0.5 x 0.5 inches
Item model number	7616SB
Material	fiberglass
Power Source	crank
Item Package Quantity	1
Number Of Pieces	1
Number of Handles	1
Included Components	Scratch Brush
Batteries Included?	No
Batteries Required?	No

About Us

Customer Services

Customer Support

Regional Access

Legal & Policies

Social

Get the App

SEFiberglass Scratch Pen Brush for Precision Cleaning and Polishing - Ideal for Electronics and Jewelry7616SB

Description

Specifications

Have a Question? See What Others Asked

Common Questions