Really useful video, thanks Cliff. That's got me thinking about the subject in much greater depth. In the past I have done odd jobs on my manual lathe and used a couple of normal 'flat bar' parallels to set my round bar square in the chuck, but obviously taking these out once the stock was tightened up, and I was under appreciating how little stability then remained against machining forces. For one-off jobs I got away with it, but I need to re-think about spiders now. I am considering purchasing a Tormach CNC lathe soon, so even more relevant for the future. Thanks for the excellent advice.

@Threadexpress

2 жыл бұрын

Hi Steve. Thanks for the feedback! Cheers Cliff

another great video! great explanation. I wanted to make spiders for my lathe since i got it, but somehow i can not force my self to make one :) have you consider making a new product? i'm sure there will be quite few people interested.

@Threadexpress

2 жыл бұрын

Hi Piotr! The problem with heavy (best if they are hardened steel) low price products is the shipping to the US from NZ (NZ itself is too small a market) Cheers! Cliff

@PiotrFoxWysocki

2 жыл бұрын

@@Threadexpress I guess you are right

Excellent idea. You didn't cover the making of the stops. How do you overcome distortion when the large slots are machined? Are the stops scrapped to parallel after machining? Thanks

@Threadexpress

2 жыл бұрын

Hi KW. Glad you are thinking deeply about this. Covering everything is difficult when most viewers just want a quick summary. You can see that from the view time analytics. The larger spiders are ground flat after hardening . The small recessed spider may have distorted slightly after machining out the slots, I did not try and measure this, my estimate was any distortion would be minor for that small diameter. Cheers Cliff

@KW-ei3pi

2 жыл бұрын

@@Threadexpress Thank you for the reply. I don't have a surface grinder, so I will have to scrape them. What material would you suggest to make them out of? Thanks

@Threadexpress

2 жыл бұрын

@@KW-ei3pi Well if you don't have a surface grinder heat treatment (hardening) of eg 01 steel may not the best idea. A medium tensile steel like 1045 would support and wear ok, and keep the material cost and machining time down. Cheers Cliff