I realize this will be a slightly focused thread of discussion pertaining to only a few, but its a topic i have growing curiosity towards. For those that have been around these machines, or possibly own them, care to input your opinion? Im specifically talking about pre-1995+/- T-75, T-71, and T-72. I dont have aspirations to buy one just yet--i have a T17 in storage, and it would cramp my single car garage too much to put another saw in there--but i could if the right deal/machine presented itself.
The T75 has great looks, and certainly a heavy machine. I havent turned my T17 on and used it, but ive monkeyed around with it enough to appreciate the build. However, I am perceptive enough to notice how design has improved since the 1960s. Sure, my Felder KF700 from 2005 isnt nearly as stout, but it does have small design improvements over the 17. This leaves me wondering, is the pre-80s T75 the right full length slider for me? The sliding table is a little short, the outrigger and crosscut fence dont appear to be as refined as contemporary examples. Bevel and height adjustments are in odd places for a slider. From what ive experienced on the T17, you almost have to kneel in front of the machine to make precise bevel adjustments. The spring under tension allows for easy bevel adjustments from about 15° to 45°, but you need to maintain constant tension on the wheel to hold the position with one hand as you lock it in with the other. Maybe i suck, but this seems almost impossible to do from the operator side of a sliding table saw. Finally, these saws seem to be well within my current and future budget. Even adding on a miscellaneous $1,000 for repairs/maintenance, these still arent that expensive.
I know next to nothing about the T-71 other than it looks like Martin's first ground up panel saw design. The T75 could very well pre-date the T17, but it looks like a solid wood saw bench design(ie the T17) fitted with a longer sliding table for sheet goods. The T-71 does not look like that at all. The rip fence design looks much improved over the T75, and the controls are mostly on the operator side of the saw. With the hydraulic blade adjustments, is it possible to make refined tweaks, or is this more of a macro-adjustment? Are these saws dado capable? Overall the machine looks like an ugly hulking brute, but it appears to be larger than the T75. Sliding table lengths in the 9-12' are also a plus to me. I currently have a 78-80" sliding table saw, so i am VERY familiar with the annoyance of not having enough stroke length. Like the T75, ive seen multiple examples of this saw selling at or under $3,000 in the states the last 12-18 months.
If i know little about the T71, then i know even less about the T72. This looks pretty similar to the 71, only the outrigger and crosscut fence on some photos make it seem like it is much improved over the 71. Also looks like the rip fence underwent additional improvements and came standard with digital readout. Similar hydraulic controls to the 71, so i hope that means the feature works well and was liked. These seem to list and sell more in the $4500-6,000 range. Assuming the machine doesnt need much work, this is also within budget.
Finally, is the T72A the beginning of the blue era? From what ive read, post 1995 the sliding table design is similar in design to contemporary versions. I dont know if its the color or if this is truly the defining point in design for Martin, but these machines are easily double the price of the other machines listed above. I think there is a 72A on ebay or craigslist for $11-12,000. This would be a stretch for me budget-wise. My next shop where i could fit these machines would more than likely be a new shop build, which will be $$$$. On top of that, id like to upgrade my taiwanese Powermatic 209 at some point, add a heavy build standalone shaper, and add a moderate build 4x8 CNC. That last item in particular might somewhat negate the need for the greatest slider of all time.
After about 2000, the saws are expensive, and their reliance on CNC controls turn me off a bit. Its crazy how many times i read on woodweb that these early to mid 2000s martins crap out quite a bit, because of the electronic controls. One shop had gremlins if the shop was under 50°. I think Patrick Walsh's old shop had issues with their newish Martin. By all means, sing the praises of how fantastic these machines are, but buying a saw for $18,000+ and then potentially getting hit with a $3-5,000 tech bill within the year is unthinkable to me.
Patrick