Can nitrate dope be applied over butyrate dope?

Nitrate dope must be used on polyester fabric as the initial coat. Butyrate dope will not adhere to polyester fabric, only nitrate. Therefore, the first few coats of chemicals must be nitrate dope. Butyrate dope is then used to build up over the nitrate dopes that are in place.

How many coats of nitrate dope?

You will apply 3 coats of nitrate dope. The first is brushed on and the remaining coats are then sprayed onto the surface. Use a good quality spray gun and allow each coat to dry at least 30 minutes before applying succeeding coats. When you spray be sure you use the cross coat method.

What is butyrate dope?

$18.70 – $302.96. All purpose dope proprietary formulated contains high total solids. Normally considered one of the best dopes for finishing fabric because of its slower curing rate, butyrate dope can be used on cotton or fiberglass fabric over nitrate dope for good tautening and filling.

Is brodak dope fuel proof?

Butyrate Dope comes in colors as well as clear, and it is fuel proof. To get the excellent penetration into bare wood that you are looking for, thin Butyrate Clear Dope to 70 percent.

How do you use butyrate dope?

First Coat of Butyrate Spray on a full cross coat (2 coats) of thinned, non-tautening butyrate dope. If you need to use a blush retarder add it as you are thinning the mixture. Completely mix the solution and then pour it through a paint filter into your spray gun. Spray the mixture as we discussed in the last issue.

What are the two types of dope used for fabric finishes?

What are the two types of dope used for fabric finishes? Cellulose nitrate and cellulose acetate butyrate.

What is dope proofing?

Dope Proofing. The treatment of a structure to be covered with fabric to keep the solvents in the dope from softening the protective coating on the structure.

Is Eze dope fuel proof?

It is non-flammable, has little odor and dries rapidly to a semi-matte finish. More coats will increase gloss. When dry and cured the finish is totally fuel proof to both diesel and straight glow fuel (in case your model is not rubber-powered!).

What is dope fabric?

Aircraft dope is a plasticised lacquer that is applied to fabric-covered aircraft. It tightens and stiffens fabric stretched over airframes, which renders them airtight and weatherproof, increasing their durability and lifespan.