Window Sash Bit with Inverted Ogee?

[John TenEyck]

I have to make a few interior doors with divided lights, including a pair of arched French doors, which should be a great project. I'd like match the existing door details as much as possible. Those doors have a mullion profile I've never seen before:

https://lh3.googleusercontent.com/3HeIuCGGV-9pDHSkCmlGsZyNIsKdk89rGay62w8l_VjBwLKJ4XtLJzS9tu1B 0mtmnBfurywnjuxKP2rvwLJE3PDeU8aTrZ9ZvIyK2GlpNLuqRI NzNOOCOA1yngFk9N-izns0ZvnVSNnzxOPtGhmVWylRpeF32cR2vx4V7T6H_aHWOU1zX Gpm22m_1TUS0P4WroIj9aE1cWrez0zsPUaBvMjruy_vsx89Eka dY_4B5aLg0LHakV0ll2WF-RqjZxQQP6hhiKoz2BfbsrFGag5JkIA1kK8nWjXhl-4Z0YfMm-jFDFby9Vc9LrC45GnOhVQWIVf8i03O8tYsiEamAhzvKdO2sJNE 1zQkU30JYlg4uaDGOjnHhMLhidJy4xE0aTNSuAIG5PQmP9CUb_ 1cplymaRHKRPCnDvR-k0EPU3XAlsijyzJLvzaFpXwt4LbyjOHAAEU3CygGKXAoABIYMJ GdySqz8vZIWjLE9YR3opjN9D2gg5rTULU0G0D3I0cwP4YZfdHa FivderYKS7obOwLhiImS8hwWTJdcnt7zh4bZI5HUXtCDX7CEv7 1JN8lQ1XafxNHK8lNVOK3W7gDGsVfZcdrKhwcop1sgFUoKw18C 1X_gBv3J7A=w486-h628-no

All the window sash bits I've seen have a bead at the top and cove at the bottom, near the glass. This profile is the opposite, a cove at the top and a bead where it meets the glass. I could make the required profile by using a combination of router bits, but then I'm left with how to cope the ends where the mullions and muntins intersect. It would just be a lot easier if I could find a bit that has the correct, or at least directionally correct, profile. Does anyone know anyone makes such a bit? I know I can get a set custom ground but that won't come cheap.

I don't have a shaper, so it has to be a router bit(s).

Thanks,

John

[Mel Fulks]

I've seen something close. One problem with it is the slightest uneven surface sanding makes the the center flat uneven in width. That profile is more work than most because there is no flat in the center for a bearing. I would push the idea that the special feature of the arched tops merits its own profile distinct from the other doors or sash.

[Wayne Lomman]

Carb-i-tool provincial pattern. A part no. is TCR 8B 1/2 but they have several variations in diameter etc. www .carbitool.com.au. Cheers

[John TenEyck]

Wayne, that bit does have the correct shape, but it's a profile bit, not a reversible window sash bit, or set, meaning it can't be used to cope the ends of the mullions. Close, but no cigar. Thanks for trying; I appreciate the effort.

John

[Wayne Lomman]

Sorry, John, I didn't realise you wanted a reversible set. If all else fails, do it the old way where you mitre the moulding and mortise and tenon or half lap the rest of it. I had to do this on my current project as the new doors had to match an old profile. Cheers

[John TenEyck]

Thanks Wayne. I may just have to do as you suggest. Are those bits you linked to available in the US?

John

[Wayne Lomman]

John, I phoned them. They don't distribute in the USA but will do a one off credit card sale over the phone and post it to you if you want to go that way. I spoke to Russell at Carbitool on +61 3 9555 2966. Cheers

[John TenEyck]

Thanks for your efforts, Wayne. Turns out I found a bit at Grizzly that has the same basic profile and should work if I go that route. And thanks for mentioning this approach. I was focused on finding a window sash bit and hadn't thought about using a buildup of parts and mitered corners, even though I've used that approach in the past.

John

[John TenEyck]

OK, I figured it out. This Grizzly router bit has just about the exact profile I need:

https://lh3.googleusercontent.com/4NiDOTa_aPAmhNZq1xZzFKl_Ijrm06XUyWkQMkd5X9Gtum6EFr w7y-zkN0zR0FMGQQqpGKAwiLqw_YsTeosGDrMCaz41n7cmtBhTbq4s nYpShBxXxVAIH7lML-d2Ng5BSNrlqF4J797SnpQdLOuurcmqSOWcvBr6K_CzjV5d8bZE jwBEFZfrwTTADSUXn9MTk1Ds0xrzzpum4I5ZhSvRD_PFRl23-pbZfAwOgewwaZYNFEg1_wtD29J9otaEUV5IMaT3o8vYigXLEEg LnUG7yJqPIHh7ad-8dbj7iIqPqRnewHdeqkaNT1M1TwZAtD1h4zHWoZp6RUElQkha1 h0a7PwanglAfYdcjQB5-icGvsAuBmjOdikrzIEwABfgo93Gl6yIj63J8rJIhpqjuPP1ZB2 YWVQoCpc99knejwSYaHwISedQQr3uygvL3WZXLapozj2Di9wmw alIBTDmxqbZbG_psr7Ymnn6fvfEkeIeMsD0iSPX-kr5a-tj13APMOoIwuasAkJr1FvciVgRNwx8DYBOwAPZyiu3mJtLU4VI UCvd1ZdAvLAurhXs3K6305OnLAMTA5i9ysckOvDJL8bcWRuc7l c6UXkCBTPoP-GoBOr_Qmaf2g=w838-h628-no

The cove and bead appear to have the same radius so cope and stick cuts should result in a good fit. And they do:

https://lh3.googleusercontent.com/Hay0kNuj0nmErltsGFBgvh4UBlD3e78F1mgzUY7QZdHlKAe95d gdQTlQFQYulOUjDTvdbj2snIkI27y49DOig70x5KARCKGY79AU VyaEIlb6c829T1ro8ziT_HMCWqzodd3ytsOsUL1qPwLu0B_a40 KMYup1zSG9K8FuiXMAJ_q5qvRuIm3AxcJH_pAK_YbbW0-RxXWEln3OeovicB-_6N3UDmR4QkaYOYPqq2181jTihAME6j-JW-Gvd5R6Lxm_AfFbPlMNZusKWj2O95gavXA6ln480QYB93dwvWpo _a0-TuKpe3HvUxdaX2P4Oz2VUl0dPW1ze_nTBJU1nSXcqkACBnytFv H9MOM30xfjpQohCnwpNMJMXYhFURVH3WQVufryIBUCJFZaOGyo kh90I0y4FYHdxOWTKfH6e19l9c9olMRv9PE-ULNYMh2ZLc6yFBlmDpAdNa4ci9wgccXcuFBZFuJ3oZ0gtyvuOX A0RJR4HyfzTqpZJuFj9WbZDT5wCVywbOjj79tjmbyzkpBtISUd ED-a5MBJ85UWU64pgVMbPnfnF0Fa77tlezojGH77iHnz3T904C8cs MN7cQ7YroHa6eaCSVeVYB4jgm4M34QifDipJA=w838-h628-no

I'll show you how I create the rest of the mullion profile and assemble it in the door when I get that far. At this point, I'm just happy I found a bit that will give a near perfect match to the existing doors.

John

[Wayne Lomman]

Good news John. Cheers