Author Topic: Epic Open Baffle build  (Read 8277 times)

Offline DACMan1

Re: Epic Open Baffle build
« Reply #60 on: December 02, 2019, 11:18:19 AM »
I can feel the dismay in that image - it always happens when you lose focus and least expect it...

You can try to use something like this:
https://www.newmantools.com/walton/extrtap.htm

Always buy the best tap you can find - the quality varies a lot - and a broken tap has a negative value far exceeding the cost of a decent tap.

Offline Katji

Re: Epic Open Baffle build
« Reply #61 on: December 02, 2019, 12:00:07 PM »
 :-\ eish  :-\
With emphasis - "Always buy the best tap you can find - the quality varies a lot - and a broken tap has a negative value far exceeding the cost of a decent tap."
Even if not the best, good / decent, not anything at Makro / Builders Warehouse and so on.  Action Bolt - Kennedy Sherwood brand.  (Jhb/Cape Town/Durban.)  Not too expensive, for an entire set. (Although I suppose it would be about double what I paid, few years ago.)  Or any specialist tool supplier.  And cutting fluid.  Even paraffin or something would've been better than nothing.
« Last Edit: December 02, 2019, 12:04:29 PM by Katji »

Offline Nicholas

Re: Epic Open Baffle build
« Reply #62 on: December 02, 2019, 12:03:56 PM »
I can feel the dismay in that image - it always happens when you lose focus and least expect it...

You can try to use something like this:
https://www.newmantools.com/walton/extrtap.htm

Always buy the best tap you can find - the quality varies a lot - and a broken tap has a negative value far exceeding the cost of a decent tap.

Hi DACMan1, that is exactly what I need



Not sure if I want to buy a set, will see if my machining friend has one...

Offline Nicholas

Re: Epic Open Baffle build
« Reply #63 on: December 02, 2019, 12:07:18 PM »
:-\ eish  :-\
With emphasis - "Always buy the best tap you can find - the quality varies a lot - and a broken tap has a negative value far exceeding the cost of a decent tap."
Even if not the best, good / decent, not anything at Makro / Builders Warehouse and so on.  Action Bolt - Kennedy Sherwood brand.  (Jhb/Cape Town/Durban.)  Not too expensive, for an entire set. (Although I suppose it would be about double what I paid, few years ago.)  Or any specialist tool supplier.  And cutting fluid.  Even paraffin or something would've been better than nothing.

I used a Somta tap (R330 for the 3 M5 taps), which is pricy considering we talking only M5.

Had more to do with my haste and lack of tapping fluid...hindsight...

Offline Katji

Re: Epic Open Baffle build
« Reply #64 on: December 02, 2019, 12:17:57 PM »
I was going to look at the Cromwell catalog to find the set I got, but google shows that Takealot is selling them. ^^!
https://www.takealot.com/sherwood-set-of-28-hss-metric-drills-taps/PLID55070007
That set has drills too but I suppose they have sets with taps only.  Probably not individual taps.  But Takealot might be more convenient for you than going to Action Bolt or whatever. 

https://www.google.com/search?newwindow=1&client=firefox-b-d&ei=t-DkXd_eK_y81fAP1cGdmAY&q=cromwell+sherwood+tap+set&oq=cromwell+sherwood+tap+set&gs_l=psy-ab.3...462850.466345..468270...1.0..0.529.6402.3-14j3j1......0....1..gws-wiz.Rxwh8Nf1zjY&ved=0ahUKEwiflq2v2pbmAhV8XhUIHdVgB2MQ4dUDCAo&uact=5

(Cromwell being the tool company responsible for Kennedy brand, based in UK, sold in SA by Action Bolt.  ...I think Action Bolt also gets Dormer, but then you're looking at a couple thousand for a tap.)

PS: ok, saw your last.  Somta rings a bell, vaguely....? I dunno.  PPS: R330 for 3? That's cheap. Remember the Rand.

Offline Nicholas

Re: Epic Open Baffle build
« Reply #65 on: December 02, 2019, 12:20:41 PM »
Broken taps aside, here are some the last of the complete pics I have now, next step is the cross over...










Offline fredeb

Re: Epic Open Baffle build
« Reply #66 on: December 02, 2019, 04:39:06 PM »
Absolutely astonishing Nicholas . Topfast Engineering Supplies in Paarden Eiland may have the quality tools you're looking for .
...evolution is the gradual development and stratification of progressive series of wholes, stretching from the inorganic beginnings to the highest level of spiritual creation.
Jan Smuts

Offline Nicholas

Re: Epic Open Baffle build
« Reply #67 on: January 06, 2020, 12:51:27 PM »
Happy 2020 all, the holiday provided some much needed R&R as well and some "me time", so here is some progress:

Cross overs all done, and fairly neat, although I am no pro with a soldiering iron




Offline Nicholas

Re: Epic Open Baffle build
« Reply #68 on: January 06, 2020, 12:56:07 PM »
Did not have enough cables to test both simultaneously, but at least they seem to work one at a time...until I get my balanced Y-splitter.



I need to still mount the cross over boards and plate amps but slowly coming to fruition.

Offline Nicholas

Re: Epic Open Baffle build
« Reply #69 on: January 27, 2020, 03:09:25 PM »
Had some fun on the RS Components website and got some goodies to neaten up my wiring as it is all exposed in an OB design.



Still busy with the plate amp and cross over enclosures, almost there...

Offline Kent Kassler

Re: Epic Open Baffle build
« Reply #70 on: January 28, 2020, 09:50:28 PM »
Spectacular work as always! :clap:
Audiophile Sound Sommelier Extraordinaire....aka Manic Depressive Temporary Void Filler Deluxe.

Offline Shonver

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Re: Epic Open Baffle build
« Reply #71 on: January 28, 2020, 10:45:55 PM »
Lovely project. Well done.
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Offline Nicholas

Re: Epic Open Baffle build
« Reply #72 on: February 05, 2020, 08:07:03 AM »
Morning all,

Just a little progress update on the steel enclosures.

Just 2mm bent up steel with hemmed sides (overlapping to underneath) to flush mount the plate amp and material covered MDF sides. Powder coated to same finish as OB frame.





Used Richard's amazing double sided tape to secure some 6mm Perspex to the underneath side of the top





Just waiting on some insulators then can mount the cross-over inside.

Must admit, this has been so much fun!

Offline Tzs503gp

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Re: Epic Open Baffle build
« Reply #73 on: February 07, 2020, 11:24:57 PM »
For your broken tap problem- mask the area( or even the whole face) and use a 1mm steel cutoff disc on a 115mm angle grinder to cut a slot for a flat screwdriver. Dress the screwdriver tip on a grindstone if itís not absolutely square. You want the screwdriver to be a tight fit in the slot. Donít slip.

Offline Nicholas

Re: Epic Open Baffle build
« Reply #74 on: February 10, 2020, 07:53:05 AM »
For your broken tap problem- mask the area( or even the whole face) and use a 1mm steel cutoff disc on a 115mm angle grinder to cut a slot for a flat screwdriver. Dress the screwdriver tip on a grindstone if itís not absolutely square. You want the screwdriver to be a tight fit in the slot. Donít slip.

Interesting, have you successfully tried this?

My concern is that the tap broke before part the "cross section" was removed, once you remove some of it with the introduction of the slot for the screw driver, will it not simple shatter in the area once you apply torque from the screw driver?

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The other problem is that one can't cut very deep into the tap with a 115mm cutting disc, perhaps a DrimmelÖ.