Search found 656 matches

by Gavin Longrain
February 7th, 2017, 6:16 am
ForumCOLON Crosscut saws 101
TopicCOLON tapering a saw with electrolyis?
RepliesCOLON 5
ViewsCOLON 1681

Re: tapering a saw with electrolyis?

... if the polarity or leads are reversed then the electrolysis process is reversed and it will eat steel. That is how logos can be etched in steel. 1. Has anyone hints, tips , suggestions or ideas how I can put logo on steel? 2. From what material do I make my template? 3. What is electrolyte shou...
by Gavin Longrain
February 7th, 2017, 5:32 am
ForumCOLON Crosscut saws 101
TopicCOLON tapering a saw with electrolyis?
RepliesCOLON 5
ViewsCOLON 1681

Re: tapering a saw with electrolyis?

I have this detailed comment from someone who clearly knows: What you have described is called Electro-Chemical Milling (ECM). It is widely used in the aerospace industry for parts with complex contours. Characteristics of the process would seem to make it ideal for tapering saws: * Metal removal ra...
by Gavin Longrain
February 4th, 2017, 8:54 am
ForumCOLON Crosscut saws 101
TopicCOLON tapering a saw with electrolyis?
RepliesCOLON 5
ViewsCOLON 1681

tapering a saw with electrolyis?

Electrolysis removes rust. I'd guess it could remove steel from the saw too... ? So - perhaps by shielding part of the saw with an insulation layer of say grease and possibly by fixing the red battery-charger clip to the saw-plate to make that the sacrificial anode - would it be possible to selectiv...
by Gavin Longrain
February 4th, 2017, 8:49 am
ForumCOLON Crosscut saws 101
TopicCOLON milling marks on a flat saw?
RepliesCOLON 5
ViewsCOLON 3893

milling marks on a flat saw?

20170201_142053.jpg
Rotary milling marks
Whilst cleaning up this GA 16 Gauge saw, I noted the milling marks where handle had been. This is a flat plate i.e. not taper nor crescent ground.

How common is this sort of milling on a flat saw? What was its purpose ?
by Gavin Longrain
December 21st, 2016, 1:33 am
ForumCOLON Crosscut saws 101
TopicCOLON Saw anvil.
RepliesCOLON 3
ViewsCOLON 2101

Re: Saw anvil.

King Karri Tree wroteCOLONLOVE the slot in the shed and thinking outside the box.

Well done.

8-)
Duncan is an inventive man! :D
by Gavin Longrain
December 11th, 2016, 6:26 am
ForumCOLON Filing
TopicCOLON German tuttle-tooth saw
RepliesCOLON 10
ViewsCOLON 9756

Re: German tuttle-tooth saw

How thick are each these saws?
by Gavin Longrain
December 10th, 2016, 11:02 am
ForumCOLON Filing
TopicCOLON German tuttle-tooth saw
RepliesCOLON 10
ViewsCOLON 9756

Re: German tuttle-tooth saw

Please name the brand. I guess it is Wilpu a.k.a Wilhelm Putsch.
by Gavin Longrain
November 25th, 2016, 12:35 am
ForumCOLON Other General Discussion
TopicCOLON One Man Tree Falling
RepliesCOLON 6
ViewsCOLON 5459

Re: One Man Tree Falling

I note the comments above about felling live trees and that some folks believe felling any live trees is necessarily and 100% bad. If you google the phrase "coppice management", you will see information about a practice that has been around at least 4000 years. In many woodlands in UK, conservation ...
by Gavin Longrain
November 9th, 2016, 12:11 am
ForumCOLON Filing
TopicCOLON Best File Brand
RepliesCOLON 6
ViewsCOLON 6583

Re: Best File Brand

I like Vallorbe a.k.a Grobet . Made in Switzerland by the one firm but they are fiendish expensive. Buy one of any kind and see how you get on with it, only then commit to a box of 6 or 10 or 12.
by Gavin Longrain
November 4th, 2016, 6:58 am
ForumCOLON Crosscut saws 101
TopicCOLON Rockwell Hardness?
RepliesCOLON 4
ViewsCOLON 4597

Rockwell Hardness?

Has anyone got a Rockwell hardness tester? And what data do vintage and modern saws show for Hardness?