DF 700 Domino question for conference table

[ChuckM]

You're right about the 500 informing the design of the 700.

I prefer the middle setting to be more like the DF700 wide setting. 3 or 4mm wider than the cutter's, but not 6mm. The widest setting on the DF500 is a bonus, and the DF700 should've kept it. I can use it like a drilling tool for cutting slots, etc.:
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[luvmytoolz]

[member=57948]ChuckS[/member]

Are you saying that the wide setting on the DF700 is the middle setting on the DF500? I know the DF500 has 3 settings to control the width where as the DF700 only has 2. I was wondering which one was missing. I assumed it was the middle setting however your statement makes me believe it's the widest setting on the DF500 that is missing.

If it helps, this is a chart I made up on the measurements I got from the DF500 and DF700.

 

[SoonerFan]

I always use tight mortises on one board and wide on the other side. Leaves room to tap the two into perfect alignment.

I join the boards in twos first rather than try to get everything lined up in a rush. This allows me to run the two joined boards through the planer.

I add boards one at a time. I hate emergency pulling boards apart because of a mistake.

My biggest challenge on really wide glue-ups is flattening the assembly. Also, I often need a helper to move the assembled piece. I do the glue-up on a cheap door I get from Home Depot. It’s perfectly flat. Use waxed paper under the boards. 

If the ends don’t line up perfectly, you can trim them with a track saw. Just don’t put Dominos close the either end. About 1.5” back from the ends works for me. You do not want to expose a mortise by trimming the ends.

Some really good advice (do first couple boards, perfect alignment, add boards one at a time after that, and do glue up on flat surface) here from [member=15289]Birdhunter[/member] .  I realize production shops likely don’t have the time but for those just starting out or with plenty of time these are good tips in my opinion.