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What Angle For Splicing Long Runs?

 
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Old 05-03-2009, 06:44 PM   #1
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What Angle For Splicing Long Runs?


Just a general question, do most of you guys use 45 degrees for your scarf(think that's the proper term) joints in long runs in your trim work, lately i've been reducing my angle to around 30 - 35 degrees seems a little easier to keep the splice from opening up. Your thoughts?
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Old 05-03-2009, 06:48 PM   #2
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Re: What Angle For Splicing Long Runs?


It depends on the rest of the job. If there are mostly 45s, I'll go with that. If there are more 22.5s, that is my choice. It just eliminates alot of bevel changes on the saw.

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Old 05-03-2009, 06:52 PM   #3
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Re: What Angle For Splicing Long Runs?


Depends on the specific material and application, as a rule however a 45DEG feathers nicely and lets you sand to an invisible edge, as you decrease the angle, more meat exists at the joint line. G
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Old 05-03-2009, 07:00 PM   #4
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Re: What Angle For Splicing Long Runs?


I try to locate the spice joint over a stud to get good nailing, and always glue the joint.
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Old 05-03-2009, 07:01 PM   #5
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Re: What Angle For Splicing Long Runs?


I use a 45* scarf. My reasoning is that it provides a larger area for the glue bond and the larger the degree of the scarf the less end-grain is involved in the glue-up. Done well, a 45* scarf is better able to blend the two pieces together and fool the eye.

That said, the smaller the degree of the scarf, the less an error in cutting effects the straightness of the run (get a 45* scarf off by a little, and it can dogleg).

Some even prefer to butt cut and biscuit long runs (or use a plywood backer).
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Old 05-03-2009, 07:11 PM   #6
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Re: What Angle For Splicing Long Runs?


I use 45º for trim, but usually
30º for decking.
The squarer cut ends seem to
resist splintering better there.
JMHO
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Old 05-03-2009, 07:22 PM   #7
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Re: What Angle For Splicing Long Runs?


I use 22.5, 30 and 45 degree. No rhyme or reason, if the saw is set at 45 then I'll leave it and do 45's. I don't generally look to nail on a stud, but will start with another piece that's longer or shorter if there is a bow in the wall by the scarf joint.
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Old 05-03-2009, 07:33 PM   #8
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Re: What Angle For Splicing Long Runs?


i think i do a bicuted butt joint better so that's what i do,i can cut it tite so it kind of snaps in,working alone a scarf is a little beyond my skills to get consistently good results
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Old 05-03-2009, 07:39 PM   #9
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Re: What Angle For Splicing Long Runs?


On all my crown molding i straight cut the two ends and but them together with a block of wood behind them and glue and nail them they will never open up and very little sanding. I don't like to 45 them because if there off alittle its to much sanding and feathering in .(paint grade) just the way i do it.
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Old 05-03-2009, 07:54 PM   #10
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Re: What Angle For Splicing Long Runs?


I like to use the bevel stop that is around 30 degrees, but because everyone else on the job uses 45 degrees, I have to do the same.
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Old 05-03-2009, 07:58 PM   #11
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Re: What Angle For Splicing Long Runs?


I will use a 45 to join. however if it is crown i hold the back of the crown up against the fence as it makes the jiont smaller and less conspicuous. A true scarf joint that is intended to lengthen a board as in boat building is always done at a 10 or 12 to one angle. This means if the boards that you are joining are 1" thick (Not nominal but actual thickness) then the length of the joint is 10" or 12" long.
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Old 05-03-2009, 09:11 PM   #12
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Re: What Angle For Splicing Long Runs?


I usually butt, but somtimes scarf. My scarf angles are as random as my thougths. I will say I see and fix more 45's tan anything else. I really think butts are best. Hold your thoughts 'gentlemen'.
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Old 05-03-2009, 09:13 PM   #13
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Re: What Angle For Splicing Long Runs?


22.5's and then pressure fit them 45's usually the top one slides off a little
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Old 05-03-2009, 09:27 PM   #14
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Re: What Angle For Splicing Long Runs?


Quote:
Originally Posted by WarnerConstInc. View Post
I usually butt, but somtimes scarf. My scarf angles are as random as my thougths. I will say I see and fix more 45's than anything else. I really think butts are best. Hold your thoughts 'gentlemen'.
Quote:
Originally Posted by john5mt View Post
22.5's and then pressure fit them 45's usually the top one slides off a little
Finesse boys, finesse.

It's all in the wrist.
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Old 05-03-2009, 10:20 PM   #15
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Re: What Angle For Splicing Long Runs?


We do a 50 degree bevel on our crown splices, and 45 degree splice on baseboard and all other trim.

We found that 50 degrees works very very well on the crown splices. A good practice is to nail on a backer block on the backside of the crown moulding.
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Old 05-03-2009, 10:49 PM   #16
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Re: What Angle For Splicing Long Runs?


45 always
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Old 05-04-2009, 12:00 AM   #17
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Re: What Angle For Splicing Long Runs?


Large Crown gets a butt with two biscuts and a 1/4" MDF backer...used to do 45 and 22.5 everywhere but once I tried it this way I was hooked. Smaller stuff gets 22.5.
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Old 05-04-2009, 12:55 AM   #18
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Re: What Angle For Splicing Long Runs?


Whatever indent I feel like hitting on my miter saw at the time.
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Old 05-04-2009, 07:31 AM   #19
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Re: What Angle For Splicing Long Runs?


I like to take my time with my joints. Sit back, dim the lights, and enjoy.

No need to rush and scarf them down regardless of the temperature degree.

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Old 05-04-2009, 08:20 AM   #20
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Re: What Angle For Splicing Long Runs?


I want to add, I like using backer pieces regardless of how I cut.

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