What is the ratio of water to mortar to make this bag work with ease?

I built a 1400 sq ft flagstone patio using Sakrete Mortar. I tried using the Marshalltown GB690 bag with inconsistent results. I made up mixtures of mortar to water at known dilutions and found that the problem has been the batch to batch inconsistency of the mortar. On close examination of the mortar some sacks had fine beach-like sand and worked well. While others contained a coarser grade of sand and clogged the Marshalltown bag at any concentration. Is there a brand of mortar or additive available that works consistently? I would be very grateful as I am building brick pillar caps with a similar problem.

Would the tip work for dispensing grout into 1/16" openings between rough stone? I would be using this for mosaic art pieces.

I don't think so. Maybe if the work is flat on a table or something. I have used these grout bags for years. The problem with small grout lines is the material has to real loose or watery. It might get real messy.

How durable is this metal tip vs a regular grout bag?

I don't know.... Bag I got mud needs to be thin....

Made of seamless black vinyl, that's not what's in the picture, so what's it made of?

the black vinyl is on the inside its a good product

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Masonry Grout Bag, 12 x 24 Inch, Mortar Tool, Assembled in USA | Seamless Black Vinyl Grout Bag, 12 x 24 Inch, 3/8 Inch Metal Tip, Pointing Brick Joints, GB692

Product ID: 22906463

Details

Brand
MARSHALLTOWN
Item Weight
136.08 g
Item dimensions L x W x H
23.43 x 13.27
Material
Vinyl
Style
Compact

⚙️3/8 inch durable metal tip

🛠️12x24 inch seamless vinyl bag

🇺🇸Made in USA with global materials

3557 som

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Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧱 Master your masonry with precision and style—because every joint deserves the best!

EFFORTLESS CLEANUP - Easy-to-clean vinyl or pair with disposable grout bags for zero-hassle post-job
PRECISION DISPENSING POWER - 3/8 inch metal tip ensures flawless mortar application every time
SPACIOUS SEAMLESS DESIGN - Generous 12x24 inch seamless black vinyl bag for mess-free filling
TRUSTED AMERICAN CRAFTSMANSHIP - Proudly assembled in the USA with premium global materials for lasting durability
VERSATILE SURFACE COMPATIBILITY - Perfect for brick, block, stone, and tile joints—one tool, endless projects

The Marshalltown Masonry Grout Bag is a professional-grade 12 x 24 inch seamless black vinyl tool featuring a durable 3/8 inch metal tip for precise mortar and grout application. Designed for use on brick, block, stone, and tile joints, it offers easy cleanup and is proudly assembled in the USA with global materials, making it a reliable choice for efficient, clean, and high-quality masonry work.

Specifications

ASIN	B000PSB13C
Best Sellers Rank	#93,127 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #92 in Tile Grout
Brand Name	MARSHALLTOWN
Color	Black
Compatible Material	Metal, Stone, Vinyl
Customer Reviews	4.4 4.4 out of 5 stars (911)
Global Trade Identification Number	00035965078184
Included Components	Masonry Grout Bag 12 X 24 Vinyl With Metal Tip
Item Dimensions	23.43 x 13.27 x 1.14 inches
Item Form	Paste
Item Type Name	Marshalltown - GB692
Item Weight	136.08 g
Manufacturer	Marshalltown The Premier Line
Material Type	Vinyl
Model	Marshalltown - GB692
Number of Items	1
Part Number	Marshalltown - GB692
Style Name	Compact
Surface Recommendation	Brick, Block, Stone, Tile
UPC	035965078184
Unit Count	1 Count
Warranty Description	All MARSHALLTOWN Company tools are warranted to be free from defective materials and workmanship. Any such defective product will, at our choice, be replaced or repaired free of charge if returned to us transportation charges prepaid. We reserve the right to issue a credit memo for the full value of any such tool, based on the purchaser’s net cost, in lieu of actual replacement or repair. Our liab…
Water Resistance Level	Not Water Resistant

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3557 som

Duties & taxes included

In stock

Sold byAmazon KyrgyzstanDelivered 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 Kyrgyzstan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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2 weeks ago

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