Recent content by Jonathan Muller

Hello! Thanks for the advice! I usually clean wax surfaces with a product dedicated to removing wax, then sand with 80 grit, blow well with air, then clean with isopropyl alcohol and the same wax removal product to make sure that no trace of dust or contaminants remains on the surface.

hello! I would like to apply epoxy over resin over polyester gelcoat. I have seen several instructions on how I should do it. Degrease first, then sand with 80 grit, then degrease again. Others said to degrease after sanding, and after sanding, just blow or vacuum without degreasing at the end...

I've been following them for a very long time. But unfortunately they only have videos with carbon or kevlar infusion. I haven't found many videos with fiberglass.

hello! thanks for the reply! I will use a larger nozzle like 2.5mm or 3mm and I will follow up if those spots appear again. I have another question related to lamination. I would like to change the lamination process from manual lay up to vacuum infusion with polyester resin and fiberglass. What...

hello! So far this is what I have used on all the pieces I have laminated 1% concentrated pigment for gelcoats and for ploisteric resins. In my case, the gel coat will be painted in an automotive system with acrylic paint and acrylic varnish. I put the pigment so that it is the same color as the...

Hello! The mold was built with vinylester gelcoat specifically for molds. It was applied in two layers with an interval between layers of 4 hours. The total thickness of the layer is around 1 mm and was measured with a thickness measurement card (gelcoat thickness gauge). The mold gelcoat was...

I don't use any thinner! To get good coverage, I make several passes until I get a thickness of 450 microns. This is for the gelcoat of the parts. The mold gelcoat is applied with a brush in two layers with a total thickness of 1000 microns.

I'm spraying with a LVLP gun with 1.8 mm nozzle.I'm using clear spray gelcoat and I'm putting 1% pigment in it.But if I polish the mold with a sponge and polishing compound, these spots disappear.Couldn't these stains be caused by the wax being applied too thickly or not drying enough?

the color is black! I don't feel a different texture, just a change in shade. Those areas seem to be more matte

Can I send you photos on email or other type of comunication?

Hello! It's quite hard to see because of the gloss of the mold. The light is reflected and it's hard for me to take a clear picture. It looks as if some pieces of wax are coming off the mold and remaining on the piece.

Brand new.Yes I buffed them with a cotton rug.

Hello! After I removed the part from the mold, these marks always remain on the mold but also on the part removed from the mold. The waxing process was this. 6 coats of TR-104 wax because the molds were newly built and the next day before applying the gelcoat and lamination I applied another...