What's a good glue to secure these onto plastic or metal? Super glue isn't working well enough.

I sometimes use E6000 glue. It's not a instant bond glue, but it's very strong. I recommend small tubes of the glue so you don't have to worry about it drying out in the tube. I also like to roughen up the back of the pin pads with some sandpaper for extra grip.

Will these work for needle felt brooches? I'm thinking they would make the brooch easier to attach to clothing. Standard brooch pins can be tricky

Assuming a felt backer, i would say Yes, if poked thru the backer and secured prior to the backer being affixed to the Brooch. with this in mind, a tack pin with a larger, maybe 10mm head, and a longer shank might work better. These Tack shanks have a 4.5mm head on a 8mm long shank. something with a 10mm head on a 8-10mm shank might work better, as most felt is 2-3mm thick. this is dependent on the backer material you use of course...

Do these tacks leave holes in the fabric once they're removed? Tack pins I have used before have damaged the fabric.

I believe it depends on the fabric. I used a satin/polyester blend and it did leave holes in my material.

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JANYUN 120 Pairs Butterfly Clutch Tie Tacks Pin Back Replacement with 8mm Length 4mm Width Blank Pins for Craft Making (4mm, Silver)

Product ID: 320901825

Details

Brand
JANYUN
Colour
Silver
Material
Silver
Number of pieces
120
Style
Butterfly

📏8mm pin length precision

🔩Nickel-plated brass durability

🦋Butterfly clutch easy install

$22.76

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Description

🦋 Lock in style, unlock your creativity!

UNIVERSAL COMPATIBILITY - Designed to fit most metal pins and brooches, making replacements or custom creations hassle-free.
EFFORTLESS SNAP ON SECURITY - Spring-loaded butterfly clutch ensures your pins stay locked in place without any tools.
PREMIUM NICKEL PLATED BRASS - Durable, lightweight metal construction offers a sleek silver finish with lasting strength.
BULK PACK FOR CREATIVE FREEDOM - 120 pairs provide ample supply for professional projects or personal crafting ambitions.
PERFECTLY SIZED FOR VERSATILITY - Pins measure 8mm length and 4.5mm diameter, ideal for lapel pins, tie tacks, badges, and DIY crafts.

The JANYUN 120 Pairs Butterfly Clutch Tie Tacks Pin Back Replacement set features 8mm long, 4.5mm diameter pins with 11mm butterfly clutch backs made from sturdy nickel-plated brass. This bulk pack offers a reliable, tool-free fastening solution perfect for lapel pins, tie tacks, badges, and DIY jewelry projects, combining durability with sleek silver aesthetics.

Specifications

ASIN	B072B9XGZ4
Brand	JANYUN
Brand Name	JANYUN
Color	Silver
Colour	Silver
Customer Reviews	4.6 out of 5 stars 3,245 Reviews
Finish Type	Glossy
Item Type Name	Pin backs
Item Weight	0.07 Kilograms
Item weight	0.07 Kilograms
Manufacturer	JANYUN
Manufacturer Part Number	ON01
Material	Silver
Material Type	Silver
Model Number	DGKK
Number of Pieces	120
Number of pieces	120
Product Style	Butterfly, Smooth, Silver
Style	Butterfly, Smooth, Silver
UPC	056312671964
Unit Count	120 Count
Wire Diameter	4.5 Millimeters

Reviews

J**.

Stecker

Bin zufrieden

9.12.2024

M**A

Good quality

found these to be of good quality and stronger than i thought they would be. Great for little craft jobs making pins etc. Would recommend

15.08.2024

C**E

Attaches pin’s

Super produit je recommande +++

3.10.2025

S**L

Good

Good quality product

21.05.2025

P**A

Geniales

Perfectos llegaron mucho antes mil gracias todo genial ,son de metal

12.05.2025

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$22.76

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Great price for an authentic product. Fast international shipping too!

3 weeks ago

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Customer service was outstanding when I had questions about the product.

2 days ago

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