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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120 Pairs Butterfly Clutch Tie Tacks Silver Locking Pin Back

Product ID: 44346483

Details

Brand
JANYUN
Color
Silver
Item Weight
0.07 kg
Material
Brass Silver
Style
Versatile

🔒Secure locking clasp

⚙️Precision 8mm x 4mm pins

🛠️Tool-free easy install

S$13

Duties & taxes included

In stock

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Description

🔗 Lock in your style, unlock your creativity!

UNIVERSAL FIT - Compatible with most metal pins and brooches—your go-to replacement clutch backs.
DIY DREAM TEAM - 120 pairs ready to elevate your lapel pins, badges, and custom crafts with ease.
DURABLE ELEGANCE - Nickel-plated brass construction ensures long-lasting shine and strength.
COMPACT PRECISION - Perfectly sized 8mm length and 4mm width pins for sleek, professional finishes.
EFFORTLESS SECURITY - Spring-loaded butterfly clutch locks pins firmly in place—no slips, no worries.

JANYUN offers 120 pairs of silver nickel-plated brass butterfly clutch tie tacks with 8mm length and 4mm width pins, designed for secure, tool-free installation. Ideal for lapel pins, badges, and DIY crafts, these durable and compact backings provide a firm grip and universal compatibility, making them a top choice for jewelry makers and professionals alike.

Specifications

ASIN	B072B9XGZ4
Best Sellers Rank	#2,634 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #7 in Jewelry Making Pin Backs
Brand Name	JANYUN
Color	Silver
Customer Reviews	4.6 4.6 out of 5 stars (5,031)
Finish Type	Glossy
Item Type Name	Pin backs
Item Weight	0.07 kg
Manufacturer	JANYUN
Manufacturer Part Number	ON01
Material Type	Brass, Silver
Model Number	DGKK
Number of Items	120
Number of Pieces	120
Product Style	Versatile
UPC	056312671964
Warranty Description	Manufacturer Warranty for 90 days from date of purchase
Wire Diameter	4.5 millimeters

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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The product exactly matches the description. Very satisfied with my purchase.

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