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Both tools are running from the same 13A plug. This can supply 13Ax230V=2990 Watts. If the vac is 1500W say, you have 2990-1500=1490 Watts left for the tool. Sometimes the wattage gets over rated by assuming the supply is 240V (it isn't) but th eabove gives a guideline. Going much over this with...

Late Feb or March (better) sounds OK, so count me in please!

From the above it seems I'm all back to front. :oops: I always use thumbs for maximum pressure, with the heavy stroke moving away from myself. With the Mk2 it's thumbs as close to bevel as possible (maybe on top of each other) and 1st fingers lightly on the guide to draw it back. Is this the...

Lengthening the tail of the Y lever reduce adjustment sensitivity. I have had good results more simply bonding 3mm steel slips to the back of cap irons with industrial superglue (Locktite from the local industrial estate). The slips fit either side of the adjuster hole and lie inside the long...

I think the paper Barry referrs to above, is saying that the cyclone size is set by the intended airflow - cu ft/ min. The inlet speed is important, and the cyclone is sized by choosing the inlet diameter to give the proper airspeed. From this all other sizes flow. Smaller cyclones should not...

I think 1D2D is what BP says the commercial designs are, so they work with lower powered motors (cheaper) and being shorter, fit parcel size of common US carriers. I got interested in this config. till I read it doesn't suit fine dust- make a good chip collector though! You said your small...

Barry, the spreadsheet and diagram don't, no indeed. However in BP's blurb, just above his cyclone plans, he says this: and goes on Thus he starts from a 1D3D and then modifies his ideas from this point to get his 1D1.64D design which also has a bit lower resistance (changed inlet and ramp...

Barry, can't find any ref to 1D1.64D on the web unfortunately, don't know where Pentz got this from. However the thesis might give some idea where his design, and your 'accident'** fits in the scheme of cyclones, and after a skim of the 100 odd pages and a concentrated read of the summaries, I...

Looks like the books have gone! Please send me a PM with addresses etc.

I've got a spare copy of Tage Frid Teaches Woodwork vol1, Joinery, and of Bob Wearing's Woodwork Aids and Devices. Happy to donate them (ie free) to anyone who thinks they'll get good use from them. (An offer to cover postage costs would be friendly).

Good on yer! Will do likewise over next few days, hope this will give some context to the stuff on Pentz's site too.

Did a bit more digging last night and came up with some interesting stuff you might like, Barry. Like most circular arguments (Pentz v World) it looks as if at least something on both sides is actually right...I found the following Phd thesis. published in 2004. If you did A level pure maths it...

Well, it just shows you shouldn't speculate too much! Just after giving Pentz the benefit of the doubt in another post, I discover that while Penz's 'no development' claim might have been true 20 years ago, there has been a lot of recent computer driven development with the aim of increasing...

This bit's separate cos it's about Bill Penz, who says he has lung problems and that he began his search for a dust free environment so he could continue woodworking. Thus he probably errs on the safe side. Never the less his website figures for the airflow at the actual machine (and the pipe...

Barry, what's the black bit under the impeller housing? Have I missed a post of yours about the 6" cyclone experiments? Cumbrian, let's get back to cutting wood. The tooling is wizzing round throwing off a mix of chips and dust. Q1/ Can you catch it? Is it thrown towards the collection pipe...

Thanks for the link, Stoday, printed it out for future ref.

There are some newish socket thingies on the market might save you a big bill. You know the way those Trend screw extractors work on screws with bxxxd heads, cutting in and gripping like a drill with far too much clearnce angle? Well these sockets are rather like a female version, with the cut...

And a "Hello" from him, too!

The tapping out of chisels above referred to a method of straightening what was basically a badly forged chisel - it was longitudinally convex, as you looked on the back (the side you flatten) Tapping out the length of the blade made a bent chisel more or less straight, as it should have been...

I am trying to learn TurboCAD - which I began with v6, now on v11. I get on fairly well with 2D, but it's too easy to forget what you've learned. I have great difficulty with 3D yet. I chose TurboCAD because there was some reasonably priced training stuff (including for woodworkers) available...