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The two-part primer in the can is a DIY dream come true

Posted on August 22, 2021 by William

When setting up a home studio, the available floor space is usually the deciding factor when choosing tools and equipment. This will eventually lead to some very difficult decisions, and we bet that no hacker or manufacturer does not have to pass on new equipment when reading this article, because they have no place to put it.

For example, ordinary home game players will not have a spray booth and spray equipment, so they must settle down in the backyard. Traditionally, this has limited the kinds of products you can actually apply, But as [Eric Strebel] Show off in his latest video, It seems that spray can technology is beginning to catch up.

3D printed parts coated with two coats of spray primer
Finish after two coats of primer.

Specifically, he has been working on a canned two-part primer that can be applied without any complicated mixing or special equipment. After hitting the plunger at the bottom, a small compartment containing the activator broke and the reaction started. From then on, you only have 24 hours to use the contents of the can before it can be cured. But since you only need to wait about 10 minutes between coats, this should give you enough time to complete the project.

In the video, [Eric] Shows how fast this thick build primer can smooth the layer lines on 3D printing. Although you still need to sand and possibly break the on-site filling to achieve the perfect result, it is clear that the primer is much better than any can we have seen in the past. Even with only two coats, the results are very significant.

If there is one downside, it is that a can of this primer will cost you about $25. This is about five times the cost of the Rust-Oleum Filler Primer commonly recommended in the DIY circle, but the result does seem to be self-evident. We don’t necessarily use it in every project, but if you have some finishes that require a particularly fine finish, you have at least one option that does not involve borrowing someone’s compressor and spray gun.

If you need help shaking the paint before spraying-be sure to check out this 3D printed paint vibrator!

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