Hi Riggly and welcome to the forum.
If you are thinking only about making your own doors I'd say that a saw which could rip solid timber would be a lot more important than one which can handle panels, especially as you already have the necessary capacity to crosscut using your SCMS. I'd also say that if you want to start from rough sawn stock you'll really need to think in terms of a planer/thicknesser and about building a router table to produce your cornices and do moulding, "cope and stick" doors, etc. In that case the saw requirements are a lot less than a slider.
If on the other hand you are looking to subsequently manufacture kitchen units you'll need to be able to rip at least 8ft long sheets of MFC and for that the length of your sliding table starts to become significant. If that is your intention I'd strongly recommend trying to get a 2.5metre sliding table if budget and space permits. From experience moving-up from a 1.5 metre sliding carraige saw to a 2.5metre Altendorf sliding table machine a number of years back was a major change for the better, at least in terms of sheet materials handling. The longer sliding carraige allows you to do true squaring and parallel cuts faster and more accurately than a smaller saw will and supporting the sheet is not an issue with the longer sliding carraige machines as that's what they're designed to do. The downside is that a 2.5metre (8ft) machine will require a footprint of at least 20ft x 14ft to accommodate it when you are processing sheet stock. The other thing you will need to look for if you are going to machine any quantity of MFC or MF-MDF (and to a lesser extent veneered MDF) is a scoring unit. Yes, you can
get by with high AT blades, but their performance isn't really up to that of an ATB/scorer combination in my experience. Furthermore they have a much shorter life on the machine than a proper 2-blade solution (i.e. they blunt mucjh more quickly) and you won't get nearly as many sharpenings out of them. Lastly when looking for a machine to do sheet work having a sliding carraige immediately to the left of the saw blade, rather than a sliding table outboard of a conventional table, is a much better option, in part because it reduces the amount of operator fatigue from constantly pushing sheet stock across the saw!
As regards the makes, the
Robland E300 is regarded as a light-industrial machine and is a generally more robust machine than the
Hammer K3. Felder Group themselves regard the Hammer range as an up-market hobby machine rather than a proper light industrial machine - for that you need to go up to a Felder K700 or K900 series. Having looked at the Hammer and Felder machiunes I think I'd agree that the Hammer won't really cut the mustard in a commercial environment. If you want to look for new machines a couple of other firms in the market are Rojek, Startrite (who sell badged Rojeks) and SCM-MiniMax, although to get a "full-size" sliding table in a new machine will break your budget. That therefore begs the question, have you considered secondhand?
Riggly":24twobyv said:
Finally I am presuming that with a bigger sliding table this assists in ripping sheets but does it hinder you to cutting smaller pieces and does the outrigger fold away or get in the way when working.
A bigger sliding table does indeed get in the way of sawing solid stock. My F45 has a 3.2metre (10ft) table, and even with the outboard support removed and the support arm folded back the fact that the end of the sliding table protrudes at the front (and rear) of the saw can make ripping small stock a complete PITA at times because it is often necessary to lean over the slider. On the other hand using a ripping foot straight-line edging of waney edge stock is a breeze.
For anyone interested there is an American comparison of the Felder, Rojek and Powermatic saws
here which might make interesting reading
johnnyb":24twobyv said:
Ripping and crosscutting panels requires unbeleivable amounts of room around the saw, hence the popularity of vertical saws(wall saws). making cornice and panel doors will need, as you mention a router table.
The guys I bought my last Altendorf were going that way - the had bought a Holz-Her panel saw to reduce the footprint. The downsides to wall saws is that they don't do solid timber well or accurately and that they require about 9ft of ceiling height to get them into most places
Scrit