Skip to content
Marshalltown DuraSoft I 20 in. x 3 in. Stainless Steel Taping Knife, Tempered Blade with Aluminum Backing Plate – 3520SD
Regular price $28.50Orders start at $399 — combine any items to reach the minimum. Learn more
Marshalltown DuraSoft I 20 in. x 3 in. Stainless Steel Taping Knife, Tempered Blade with Aluminum Backing Plate
The MARSHALLTOWN 3520SD DuraSoft I taping knife has a 20 in. x 3 in. tempered premium stainless steel blade with an aluminum backing plate for drywall finishing. The resilient DuraSoft handle provides a soft feel that reduces fatigue during long work sessions. One knife is included per order.
Key Features:
- Stainless steel blade: Tempered premium stainless steel blade reinforced with an aluminum backing plate.
- Right amount of flex: The stainless steel blade flexes just right for feathering but won't take a set.
- Faster cornering: Designed to run corners faster and with greater ease during drywall finishing.
- DuraSoft handle: Resilient DuraSoft handle provides a soft feel that reduces user fatigue.
- Durable handle: The DuraSoft handle offers excellent durability for long-term use.
- Made in USA: Made in the USA with global materials.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Marshalltown Company |
| Manufacturer model | 3520SD |
| UPC | 035965043601 |
| Sell unit | 1 taping knife |
| Material | Tempered premium stainless steel blade with aluminum backing plate |
| Nominal size | 20 in. x 3 in. |
| Length | 20 in. |
| Width | 3 in. |
| Handle | DuraSoft I ergonomic handle |
| Pack quantity | 1 knife |
| Assembly | Assembled, ready to use |
| Intended use | Drywall taping, feathering and finishing |
| Country of origin | Made in the USA with global materials |
Fit and Compatibility:
Part of the MARSHALLTOWN DuraSoft I taping knife line, which ranges from 6 in. to 20 in. stainless steel blades with 3 in. width; pair with smaller sizes for taping and this 20 in. knife for finishing and feathering. Compatible with standard joint compound and drywall finishing workflows.
Frequently Asked Questions (FAQ):
Q: What size is this taping knife?
A: The blade measures 20 in. long by 3 in. wide.
Q: What is the blade made of?
A: It has a tempered premium stainless steel blade reinforced with an aluminum backing plate.
Q: Will the blade stay bent after use?
A: No, the stainless steel blade flexes for feathering but won't take a set.
Q: Is it comfortable for long use?
A: Yes, the resilient DuraSoft handle has a soft feel designed to reduce fatigue and offers excellent durability.
Q: Where is it made?
A: It is made in the USA with global materials.
Q: What is it used for?
A: It is designed for drywall finishing, including feathering compound and running corners faster and easier.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
A 20 in. stainless steel knife is a finishing knife: use it for final coats and feathering over taped seams where a wide blade flattens ridges and blends compound into the surrounding wall. Stainless steel resists rust and needs only a wipe-down, and the fact that it won't take a set means the blade edge stays true. Keep a 6-8 in. knife for taping and embedding tape, then step up to this 20 in. knife for topping and finishing coats.
Keep blade edges away from your body when cleaning, as knife edges can cause cuts; wear eye protection when working overhead with joint compound.
Add the MARSHALLTOWN 20 in. DuraSoft I stainless steel taping knife to your drywall toolkit today.
All third party trademarks, including logos and icons, referenced on our website and product pages remain the property of their respective owners. Unless specifically identified as such, Arbor's use of third party trademarks does not indicate any relationship, affiliation, sponsorship, or endorsement between Arbor Home and the owners of these trademarks. Any references by Arbor Home to third party trademarks are to identify the corresponding third party goods.
