UV Resin Tutorial: Pressed Flower Keychains

A pressed flower can hold the memory of a garden, a celebration, or an ordinary day worth remembering. Turning it into a resin keychain gives that memory a practical form - but a clear, polished result depends on more than pouring resin over a bloom.

The video’s most useful lesson is control: control how light reaches the resin, how the flower stays in position, and how air escapes before curing. Its layered approach separates those challenges instead of trying to solve them all in one pour.

Here’s how to understand that approach, where beginners can run into trouble, and what to check before turning a finished piece into a keychain.

Key Takeaways

Choose a transparent mold. UV resin needs light exposure, and colored molds can restrict access to the sides and underside.
Cure decorative backgrounds separately. Glitter can complicate curing; finishing that layer first reduces unnecessary exposure of the flower.
Anchor the flower before covering it. A small amount of clear resin helps prevent the bloom from floating out of position.
Inspect for bubbles around petals, corners, and the hanging-hole post. These areas deserve attention before every cure.
Add the final resin gradually. Small additions give you more control over the finish and help keep the attachment hole open.
Treat curing as product-specific. Exact exposure times, lamp specifications, and maximum layer thickness are not specified in the video.
Check the underside before removing the piece. A transparent mold allows an additional curing pass from below when needed.

Understand the Project Before You Pour

The demonstration uses a small mold with a built-in post that creates an attachment hole. A glitter background sits beneath a pressed flower, and a clear top layer seals the design.

That construction serves three different purposes:

The background establishes the look.
The positioning layer holds the flower still.
The finishing layer encloses the flower and shapes the surface.

This is more than an aesthetic choice. Separating the layers makes it easier to identify and correct problems while they are still accessible.

A completely clear version offers a different effect: the flower remains visible from both sides. A glitter background creates a more defined front and back. Neither is inherently better; the choice depends on whether you want a floating botanical look or a decorative backdrop.

Materials Shown in the Demonstration

UV-curing resin
Transparent silicone mold with a hanging-hole post
UV curing lamp
Pressed flower
Optional glitter
Small mixing cup and stirring tool
Toothpick
Wipe or napkin
Loop-style keychain attachment

Important preparation gap: The video begins with an already-pressed flower. Its pressing method, drying criteria, and storage conditions are not specified in the video.

Safety equipment, ventilation requirements, and detailed handling precautions are also not specified in the video. Follow the resin and lamp manufacturers’ instructions rather than treating the demonstration as a complete safety guide.

1. Choose a Mold That Gives Light Access

Unlike a resin system that cures after two components are mixed, the one-bottle UV resin shown relies on UV light.

A transparent mold gives that light more routes into the piece. An opaque or colored mold limits access, particularly around the sides and underside. The practical consequence is that a surface may appear finished while less-exposed areas remain uncertain.

Transparency helps, but it does not guarantee a complete cure. The thickness of the pour and the amount of decorative material still matter.

The same reasoning applies to colorants. The narration is ambiguous about "opaque" coloring, but its explanation consistently favors allowing light to penetrate. The useful principle is to avoid treating a densely colored mixture as though it will cure exactly like clear resin. Compatible colorants and acceptable concentrations are not specified in the video.

2. Make the Background a Separate Decision

For the glitter version, the creator mixes glitter into a small amount of resin and cures that base before placing the flower.

The benefit is practical: if the decorative layer needs additional curing, the flower is not yet present. This keeps background troubleshooting separate from flower placement.

There is also a design lesson here. Glitter does not have to fill the piece to contribute to it. In the demonstration, too much glitter makes the mixture difficult to pour, so more resin is added to restore flow.

A useful approach is to decide what should attract attention first:

For a flower-focused keepsake, keep the background visually restrained.
For a sparkling accessory, let the background play a larger role.
For a two-sided botanical piece, skip the glitter background altogether.

Exact resin-to-glitter proportions are not specified in the video.

3. Use a Positioning Layer Instead of a Deep Pour

Once the base is ready, a small amount of clear resin becomes the flower’s positioning layer.

This solves a common problem demonstrated in the video: placing a flower into a fuller mold can allow it to float toward the surface. Rather than repeatedly pushing it down, the layered method fixes its position before the final pour.

Place the flower, adjust it gently, and cure the positioning layer enough to hold it in place. The creator takes care not to poke delicate petals, which can damage their appearance.

The broader lesson is to finish the composition before adding volume. Decide how the flower sits relative to the mold edges and attachment hole while movement is still easy.

The brief cure used for positioning is an intermediate step - not proof that the whole keychain is finished. Its exact duration is not specified in the video.

4. Give Trapped Air Somewhere to Go

Bubbles are not just a surface problem. The demonstration identifies several places where they can hide:

Mold corners and edges
The base of the hanging-hole post
Overlapping petals
The center of the flower

A toothpick allows small bubbles to be lifted out or brought toward the surface. Looking from a low angle can reveal bubbles and uneven filling that are less obvious from above.

This inspection stage is especially valuable before curing. The creator notes that warming during curing can reveal air that was not initially visible. Once the resin has set, that defect is harder to address.

The video also shows a lighter being used for surface bubbles and warns about damaging the mold or resin. That should not be treated as an essential step. Whether an open flame is appropriate for a particular resin is not specified in the video; use the product’s handling guidance rather than assuming the demonstrated technique is suitable.

5. Build the Finish Slowly - and Protect the Hole

The final clear layer encloses the flower. Here, the challenge shifts from placement to surface control.

Adding resin in small increments allows it to level before the next addition. The creator aims for a gently rounded surface rather than a recessed one, explaining that curing can leave an uneven edge if the fill is too low.

The important distinction is between a controlled rounded finish and an overflow. More resin is not automatically better.

The attachment post needs particular attention. Resin that flows across its top can narrow or close the hole. This happens in the demonstration, making one attachment difficult to thread through.

That small mistake offers a useful lesson: the hole is a functional part of the design, not empty space to ignore. Inspect it from multiple angles before curing.

6. Inspect and Cure Before Demolding

Before peeling the mold away, check the surface for:

A depression or uneven finish
Visible bubbles or gaps
Overflow around the rim
Resin covering the attachment opening

The creator recommends making any additional surface adjustments while the piece is still seated in the mold. Once the mold’s edge has been peeled away, that original seal is disturbed.

The demonstration also includes an additional curing pass from the underside, especially because the glitter background raises questions about light penetration.

Do not use a lamp’s preset cycle as a universal recipe. The video does not specify curing times, lamp wavelength or output, or a definitive test for full cure. It shows the creator repeating exposure when the surface remains tacky, but product-specific instructions are needed to interpret that result.

7. Match the Hardware to the Intended Use

After demolding, the creator threads a loop-style attachment through the opening and secures it around the keychain hardware.

The same resin shape can become different accessories:

A keychain with a split ring
A bag charm with a clip
A zipper pull
A pendant, with suitable attachment hardware

This is where planning ahead pays off. A flower intended for display on a bag may call for a different attachment than one intended for keys. Either way, the opening must remain usable.

Long-term wear resistance, sunlight exposure, and color retention are not specified in the video. The project demonstrates making the accessory, not a guarantee of permanent preservation.

A More Thoughtful Way to Preserve a Bloom

The strongest idea in this tutorial is not simply that UV resin can hold a pressed flower. It is that small, deliberate stages make a delicate project easier to manage.

Create the background first, establish the flower’s position, inspect for air, and then build the finish. Each stage reduces the number of things that can go wrong at once.

For a first attempt, a simple composition offers the clearest learning experience. A single flower and a restrained background make it easier to see what the resin, light, and mold are doing - before committing a bloom with special emotional value.

Source: "Pressed Flower Resin Keychains | Easy UV Resin Tutorial + Gift Ideas" - Flower Pressing with Microfleur, YouTube, Aug 28, 2026 - https://www.youtube.com/watch?v=krzwukw_2ao