FHB Logo Facebook LinkedIn Email Pinterest Twitter X Instagram Tiktok YouTube Plus Icon Close Icon Navigation Search Icon Navigation Search Icon Arrow Down Icon Video Guide Icon Article Guide Icon Modal Close Icon Guide Search Icon Skip to content
Subscribe
Log In
  • How-To
  • Design
  • Tools & Materials
  • Restoration
  • Videos
  • Blogs
  • Forum
  • Magazine
  • Members
  • FHB House
  • Podcast
Log In
Tool Hound

Clam Clamp for Perfect Miters

By Justin Fink
  • X
  • facebook
  • linkedin
  • pinterest
  • email
  • add to favorites Log in or Sign up to save your favorite articles
Clam Clamp
The Tool Hound says that Clam Clamps are the fastest way to get the tightest miters. Period.
Video Player is loading.
Current Time 0:00
/
Duration 1:46
Loaded: 0%
0:00
Stream Type LIVE
Remaining Time -1:46
 
1x
    • Chapters
    • descriptions off, selected
    • captions settings, opens captions settings dialog
    • captions off, selected
    • en (Main), selected

    This is a modal window.

    Beginning of dialog window. Escape will cancel and close the window.

    Text
    Background
    Window
    Font Size
    Text Edge Style
    Font Family

    End of dialog window.

    This is a modal window. This modal can be closed by pressing the Escape key or activating the close button.

    This is a modal window. This modal can be closed by pressing the Escape key or activating the close button.

    Sneaking up on tight miter joints can be one of the most time-consuming and frustrating parts of trimming out a door, built-in, or window. I could ramble on about the design, adjustability, versatility, and payback time of using FHB contributor Jim Chestnut’s Clam Clamps. But I’d rather just sum it up for you all by saying this: Clam Clamps are the fastest way to get the tightest miters. Period. Nuff said.

    UPDATE: Some readers have had trouble finding a source for the Clam Clamp. For details visit www.miterclamp.com.

    Sign up for eletters today and get the latest how-to from Fine Homebuilding, plus special offers.

    Signing you up...

    This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
    See all newsletters
    See all newsletters
    ×

    Get home building tips, offers, and expert advice in your inbox

    Signing you up...

    This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
    See all newsletters
    See all newsletters

    New Feature

    Fine Homebuilding Forums

    Ask questions, offer advice, and share your work

    • X
    • facebook
    • linkedin
    • pinterest
    • email
    • add to favorites Log in or Sign up to save your favorite articles

    View Comments

    1. ike3 | Feb 22, 2010 12:33pm | #1

      Where can I buy the Clam Clamps?

    2. 3pinner | Feb 22, 2010 03:36pm | #2

      google is your best friend

      http://www.miterclamp.com/

    3. cateyeblue | Feb 22, 2010 05:56pm | #3

      Its a nifty tool for doing miters in a shop setting but when you're trimming doors and windows on a job site, the jambs are very often NOT flush with the drywall - Dealing with that problem is what makes a good trim carpenter. With a basic little off-the-shelf casing from Home Depot, if you nail it together ahead of time when the jamb is proud of the drywall, when you go nail the outside of the casing it will pull the miter apart, or if by some miracle it doesn't, you'll have a gap between the back of the casing and the drywall. If the sheetrock is proud of the jamb, you'll be left with a gap between the jamb and the casing. When I can, I shave a jamb down to be flush with the drywall but that can be difficult for a variety of reasons. Otherwise, I treat it as a compound miter (which it is!) The trick is to lay the casing on your miter saw the way it is sitting on the wall. If the jamb is sticking out from the drywall, shim the casing the same amount on its inside edge as it lays on your miter saw as you cut the 45. If both pieces at the corner are treated the same, they will meet nicely and give you a glue surface to boot. Happy trimming!

    4. Jeddore | Feb 24, 2010 02:58pm | #4

      Clam Clamps look great but they are not available from any number of vendors I have called. They all say that the manufacturer is very slow and they don't know when they will see stock

    5. NMVFC | Feb 25, 2010 12:03pm | #5

      ...the Hartford clamp works just as well and is commercially available--about $60 a clamp. I have four of them and use them for all my miter/spline joints. Just Bing "Hartford Clamps"

    6. clampman3 | Feb 25, 2010 12:30pm | #6

      Hi Justin,

      Thank you too, Justin! Good job on the video.

      I should be able to start shipping to both dealers and retail customers within 2 weeks.

      The price per clamp varies with the quantity ordered. There are price breaks at 2ea, 4ea, and 8ea if ordered direct or from many of my dealers. The prices on the "Dealers and Warranty" link on my website are current.

      Generally, interior trim carpenters purchase more than homeowners and being a little biased towards trim carpenters....

      Cheers,
      Jim Chestnut

    7. MFournier | Mar 17, 2010 06:56am | #7

      NMVFC writes: ...the Hartford clamp works just as well and is commercially available--about $60 a clamp. I have four of them and use them for all my miter/spline joints. Just Bing "Hartford Clamps"

      Yup I agree the Hartford clamp is great. I have many of them and I think they are even better then this clamp and they have been around a lot longer. Also if you really want your mitered casing to hold you need a spline (plate jointer works) of some type. Since a miter joint is mostly end grain and end grain to end grain glue joints are not very strong. But install a spline you get a very strong miter that will never come apart If you live in the Hartford CT area East coast tool is a great place to get them.

    Log in or create an account to post a comment.

    Sign up Log in

    Become a member and get full access to FineHomebuilding.com

    More Tool Hound

    View All
    • Update on Bosch's New Finger-Saving Portable Saw
    • Video: Bosch Reaxx Finger-Saving Tablesaw Demonstration
    • Mosely Infinity Level System - Very impressive
    • Bosch's New Finger-Saving Portable Saw
    View All

    Up Next

    Video Shorts

    Featured Story

    Putting Drywall Sanders to the Test: Power, Precision, and Dust Control

    A pro painter evaluates a variety of drywall sanders and dust collection systems for quality of finish, user fatigue, and more.

    Featured Video

    SawStop's Portable Tablesaw is Bigger and Better Than Before

    The 10-in. Jobsite Saw PRO has a wider table, a new dust-control port, and a more versatile fence, along with the same reliable safety mechanism included in all SawStop tablesaws.

    Related Stories

    • Podcast Episode 685: Patching Drywall, Adding Air Barriers, and Rotted Walls
    • Podcast Episode 684: Masonry Heaters, Whole-House Ventilation, and Porch Flooring
    • Podcast Episode 683: Barndominiums, ERVs, and Radon Mitigation
    • Podcast Episode 682: Basement Flooring, Architectural Salvage, and HVAC Ducts

    Discussion Forum

    Recent Posts and Replies

    • |
    • |
    • |
    • |
    • |
    • |
    View More Create Post

    Highlights

    Fine Homebuilding All Access
    Fine Homebuilding Podcast
    Tool Tech
    Plus, get an extra 20% off with code GIFT20

    "I have learned so much thanks to the searchable articles on the FHB website. I can confidently say that I expect to be a life-long subscriber." - M.K.

    Get home building tips, offers, and expert advice in your inbox

    Signing you up...

    This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
    See all newsletters
    See all newsletters

    Video

    View All Videos
    • Podcast Episode 678: Live from the Builders' Show-Part 2
    • Podcast Episode 677: Live from the Builders' Show-Part 1
    • FHB Podcast Segment: The Best of the Fine Homebuilding Podcast, Volume 8
    • FHB Podcast Segment: Larsen-Truss Retrofit to Existing Stud-Frame House
    View All

    Fine Homebuilding Magazine

    • Issue 331 - June 2025
      • A More Resilient Roof
      • Tool Test: You Need a Drywall Sander
      • Ducted vs. Ductless Heat Pumps
    • Issue 330 - April/May 2025
      • Deck Details for Durability
      • FAQs on HPWHs
      • 10 Tips for a Long-Lasting Paint Job
    • Issue 329 - Feb/Mar 2025
      • Smart Foundation for a Small Addition
      • A Kominka Comes West
      • Making Small Kitchens Work
    • Issue 328 - Dec/Jan 2024
      • How a Pro Replaces Columns
      • Passive House 3.0
      • Tool Test: Compact Line Lasers
    • Issue 327 - November 2024
      • Repairing Damaged Walls and Ceilings
      • Plumbing Protection
      • Talking Shop

    Fine Home Building

    Newsletter Sign-up

    • Fine Homebuilding

      Home building tips, offers, and expert advice in your inbox.

    • Green Building Advisor

      Building science and energy efficiency advice, plus special offers, in your inbox.

    • Old House Journal

      Repair, renovation, and restoration tips, plus special offers, in your inbox.

    Signing you up...

    This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
    See all newsletters

    Follow

    • Fine Homebuilding

      Dig into cutting-edge approaches and decades of proven solutions with total access to our experts and tradespeople.

      Start Free Trial Now
      • Facebook
      • Instagram
      • X
      • LinkedIn
    • GBA Prime

      Get instant access to the latest developments in green building, research, and reports from the field.

      Start Free Trial Now
      • Facebook
      • YouTube
    • Old House Journal

      Learn how to restore, repair, update, and decorate your home.

      Subscribe Now
      • Facebook
      • Instagram
      • X
    • Fine Homebuilding

      Dig into cutting-edge approaches and decades of proven solutions with total access to our experts and tradespeople.

      Start Free Trial Now
      • Facebook
      • Instagram
      • X
      • LinkedIn
    • GBA Prime

      Get instant access to the latest developments in green building, research, and reports from the field.

      Start Free Trial Now
      • Facebook
      • YouTube
    • Old House Journal

      Learn how to restore, repair, update, and decorate your home.

      Subscribe Now
      • Facebook
      • Instagram
      • X

    Membership & Magazine

    • Online Archive
    • Start Free Trial
    • Magazine Subscription
    • Magazine Renewal
    • Gift a Subscription
    • Customer Support
    • Privacy Preferences
    • About
    • Contact
    • Advertise
    • Careers
    • Terms of Use
    • Site Map
    • Do not sell or share my information
    • Privacy Policy
    • Accessibility
    • California Privacy Rights

    © 2025 Active Interest Media. All rights reserved.

    Fine Homebuilding receives a commission for items purchased through links on this site, including Amazon Associates and other affiliate advertising programs.

    • Home Group
    • Antique Trader
    • Arts & Crafts Homes
    • Bank Note Reporter
    • Cabin Life
    • Cuisine at Home
    • Fine Gardening
    • Fine Woodworking
    • Green Building Advisor
    • Garden Gate
    • Horticulture
    • Keep Craft Alive
    • Log Home Living
    • Military Trader/Vehicles
    • Numismatic News
    • Numismaster
    • Old Cars Weekly
    • Old House Journal
    • Period Homes
    • Popular Woodworking
    • Script
    • ShopNotes
    • Sports Collectors Digest
    • Threads
    • Timber Home Living
    • Traditional Building
    • Woodsmith
    • World Coin News
    • Writer's Digest
    Active Interest Media logo
    X
    X
    This is a dialog window which overlays the main content of the page. The modal window is a 'site map' of the most critical areas of the site. Pressing the Escape (ESC) button will close the modal and bring you back to where you were on the page.

    Main Menu

    • How-To
    • Design
    • Tools & Materials
    • Video
    • Blogs
    • Forum
    • Project Guides
    • Reader Projects
    • Magazine
    • Members
    • FHB House

    Podcasts

    • FHB Podcast
    • ProTalk

    Webinars

    • Upcoming and On-Demand

    Podcasts

    • FHB Podcast
    • ProTalk

    Webinars

    • Upcoming and On-Demand

    Popular Topics

    • Kitchens
    • Business
    • Bedrooms
    • Roofs
    • Architecture and Design
    • Green Building
    • Decks
    • Framing
    • Safety
    • Remodeling
    • Bathrooms
    • Windows
    • Tilework
    • Ceilings
    • HVAC

    Magazine

    • Current Issue
    • Past Issues
    • Magazine Index
    • Subscribe
    • Online Archive
    • Author Guidelines

    All Access

    • Member Home
    • Start Free Trial
    • Gift Membership

    Online Learning

    • Courses
    • Project Guides
    • Reader Projects
    • Podcast

    More

    • FHB Ambassadors
    • FHB House
    • Customer Support

    Account

    • Log In
    • Join

    Newsletter

    Get home building tips, offers, and expert advice in your inbox

    Signing you up...

    This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
    See all newsletters
    See all newsletters

    Follow

    • X
    • YouTube
    • instagram
    • facebook
    • pinterest
    • Tiktok

    Join All Access

    Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features.

    Start Your Free Trial

    Subscribe

    FHB Magazine

    Start your subscription today and save up to 70%

    Subscribe

    You have 1 free article remaining.

    Get complete site access, including thousands of videos, how-to tips, tool reviews, and design features.

    Start your FREE trial

    Already a member? Log in

    We hope you’ve enjoyed your free articles. To keep reading, become a member today.

    Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine.

    Start your FREE trial

    Already a member? Log in

    Privacy Policy Update

    We use cookies, pixels, script and other tracking technologies to analyze and improve our service, to improve and personalize content, and for advertising to you. We also share information about your use of our site with third-party social media, advertising and analytics partners. You can view our Privacy Policy here and our Terms of Use here.

    Cookies

    Analytics

    These cookies help us track site metrics to improve our sites and provide a better user experience.

    Advertising/Social Media

    These cookies are used to serve advertisements aligned with your interests.

    Essential

    These cookies are required to provide basic functions like page navigation and access to secure areas of the website.

    Delete My Data

    Delete all cookies and associated data