CAD Drawings of helper handles... ?

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CAD Drawings of helper handles... ?

Postby Gavin Longrain » October 25th, 2016, 12:25 am

Can any send me a CAD drawing of the metal bolt that lives inside helper or aux handles? I am getting a price to get them made in volume.

$_57[1].JPG
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Re: CAD Drawings of helper handles... ?

Postby Jim_Thode » October 25th, 2016, 7:04 am

I would think that that part would be more likely forged or cast then machined. I hand forged one of these (on the right) and welded and turned the other for the helper handle.
152808960.oBkIte4O.IMG_7440a.jpg


158650728.MrFonm2h.IMG_7516a.jpg

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Re: CAD Drawings of helper handles... ?

Postby chancwj » March 28th, 2017, 8:41 am

Gavin,
Do you still want a CAD file? I can make you one if you tell me what you want. Like what thread, overall length, pin diameter, etc.

Someone is selling similar bolts on eBay. But they don't have that swell around the pin hole.
http://www.ebay.com/itm/Cross-Cut-Saw-Handle-Bolts-3-1-2-Long-Thread-3-8-16-NC-Slot-Depth-1-5-8-USA-/252796563912?hash=item3adbd971c8

Jim, your handle swelling technique is brilliant. I'd read about using Polyethylene Glycol to stabilize wood in Hoadley's Understanding Wood. Hadn't thought of using it to keep handles tight. How has that held up over time?
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Re: CAD Drawings of helper handles... ?

Postby PATCsawyer » March 28th, 2017, 9:12 am

I purchased three dozen of those bolts from that eBay seller and found them to be well made. Rather than use a soft steel pin that will easily deform, I cut the threads off a long-shanked 3/16" grade 8 bolt, as it's much tougher steel. That size is not easy to find at hardware stores, but can be ordered from: Airparts: http://www.airpartsinc.com/1191_AN3_BOLTS_3-16_(10-32)_DRILLED.htm

The large bolts can be purchased from Flicker Forge http://www.flickerforge.com/saw.php They make their parts in lot sizes and from time to time run out of the long bolts. Must be patient.
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Re: CAD Drawings of helper handles... ?

Postby Gavin Longrain » March 30th, 2017, 2:11 pm

Thanks for this input gents. I no longer need CAD drawings for I have found someone to fabricate such bolts for me in UK.
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